CN114707393A - Neutron absorption dose rapid acquisition method considering atmospheric humidity influence - Google Patents
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Abstract
The invention relates to a method for quickly acquiring neutron absorption dose, in particular to a method for quickly acquiring the neutron absorption dose based on Monte Carlo simulation data and considering the influence of atmospheric humidity, which is used for solving the defects that the conventional method for acquiring the neutron absorption dose does not usually consider the influence of the atmospheric humidity on the neutron absorption dose, so that the accuracy of acquiring the distribution of the prompt neutron absorption dose field is influenced, or even if the influence of the atmospheric humidity on the neutron absorption dose is considered, the method consumes long time and cannot quickly acquire the distribution of the neutron absorption dose field according to any given relative humidity condition. According to the method for rapidly acquiring the neutron absorption dose considering the influence of atmospheric humidity, the neutron absorption dose reference data under the reference humidity condition is utilized, the humidity correction coefficient is obtained through the relation among the humidity correction coefficient, the mass distance and the air water content, and the rapid acquisition of the neutron absorption dose field under any given atmospheric humidity condition is realized.
Description
Technical Field
The invention relates to a method for rapidly acquiring neutron absorption dose, in particular to a method for rapidly acquiring neutron absorption dose considering atmospheric humidity influence based on Monte Carlo simulation data.
Background
A large number of prompt neutrons released by nuclear explosion in a very short time can propagate in the atmosphere for a long distance, and then interact with the atmosphere in the space around the explosion point to form a strong nuclear radiation dose field. The prompt neutron absorption dose is an important component of the nuclear radiation dose in the early stage of nuclear explosion, and the accurate acquisition of the spatial distribution of the neutron absorption dose has very important significance for researching the rule of early nuclear radiation and the radiation effect of the early nuclear radiation on personnel.
When calculating and predicting the distribution of the neutron dose field of the nuclear explosion, the influence of the atmospheric environment on neutron transmission needs to be considered. Besides being influenced by the action of main components (nitrogen, oxygen and the like) in the atmosphere, the transmission of neutrons in the atmosphere is also an important influence factor on the action of water molecule content in the atmosphere, because the reaction section of hydrogen elements in water vapor and neutrons is large and the interaction is strong. Brien et al, "cosmetic Ray Induced Neutron Back Sources and flues for geometrics of Air Over Water, group, Iron, and Aluminum", published in The Journal of geometrology, Journal of Geopharyology, Journal of hydrodynamics, Journal of hydrodynamics, No. 14, No. 5, Research results of Brien et al, "The effect of atmospheric Water cathode on Neutron core in The biological-nuclear magnetic resonance sensing system", published in 1978, No. 83, No. 1, show that when The Air surrounding The detector has a certain humidity, the accuracy of the measurement result of cosmic ray neutrons is affected by the interaction between cosmic ray neutrons and hydrogen in water vapor, which shows that the relative humidity as one of the atmospheric environmental parameters, the change of the concentration of water in the air directly reflects the change of the hydrogen element contained in the atmosphere, and the factor influences the distribution of the prompt neutron absorber dose field.
In the prior art, no report about a method for rapidly acquiring an instantaneous neutron absorption dose considering the influence of atmospheric humidity is found, and if the absorption dose of instantaneous neutrons is acquired according to the prior art, even if the influence of atmospheric humidity on the neutron absorption dose needs to be considered, large-scale Monte Carlo particle transport simulation calculation is needed, so that the problems that the calculation time consumption is long and the neutron absorption dose field distribution cannot be rapidly acquired according to any given relative humidity condition are solved.
Disclosure of Invention
The invention aims to solve the problems that the existing neutron absorber dose acquisition method usually does not consider the influence of atmospheric humidity on neutron absorber dose, so that the accuracy of acquiring the distribution of instantaneous neutron absorber dose fields is influenced, or even if the influence of atmospheric humidity on neutron absorber dose is considered, the method has the defects of long time consumption and incapability of quickly acquiring the distribution of neutron absorber dose fields according to any given relative humidity condition, and provides the method for quickly acquiring the neutron absorber dose considering the influence of atmospheric humidity.
In order to solve the defects of the prior art, the invention provides the following technical solutions:
a neutron absorption dose rapid acquisition method considering the influence of atmospheric humidity is characterized by comprising the following steps:
measuring the moisture content of the humid air and the physical parameters of various nuclide components in the humid air corresponding to different relative humidities under the preset atmospheric density, and establishing a corresponding relation table among the relative humidity, the moisture content of the humid air and the physical parameters of the various nuclide components in the humid air;
step (2), establishing a reference neutron transport calculation model under the reference relative humidity atmospheric condition according to the corresponding relation table obtained in the step (1), and obtaining neutron absorption dose parameters at different distances from a source under the reference relative humidity atmospheric condition through a particle transport Monte Carlo numerical simulation method to serve as reference data;
fitting neutron absorption dose and mass distances at different distances from a source under the reference relative humidity atmospheric condition to obtain a relational expression of the neutron absorption dose and the distance under the reference relative humidity atmospheric condition; the mass distance is the product of the reference atmospheric density and the distance;
step (4) respectively establishing neutron transport calculation models under different relative humidity conditions according to the corresponding relation table obtained in the step (1), and obtaining data of neutron absorption dose changing along with distance corresponding to the neutron transport calculation models through a Monte Carlo numerical simulation method;
step (5), dividing the neutron absorption dose obtained in the step (4) by the neutron absorption dose at the corresponding mass distance under the reference humidity condition in the step (2), and obtaining the ratio of the neutron absorption dose under different relative humidity atmospheric conditions and the neutron absorption dose under the reference relative humidity atmospheric condition at different mass distances, wherein the ratio is used as a humidity correction coefficient;
step (6), performing data fitting on the obtained relation between the humidity correction coefficient and the moisture content of the humid air at different mass distances to obtain a relational expression between the humidity correction coefficient and the moisture content of the humid air at different mass distances;
step (7), performing data fitting on the relationship between the slope, the intercept and the mass distance in the relationship between the humidity correction coefficient and the moisture content of the humid air at different mass distances to obtain a relationship between the slope and the mass distance and a relationship between the intercept and the mass distance;
step (8), substituting the fitting formulas of the slope and the intercept in the step (7) into the step (6), and integrating to obtain a universal relational expression between the humidity correction coefficient and the mass distance as well as the moisture content of the humid air;
and (9) calculating a humidity correction coefficient according to the neutron absorber dose reference data under the reference humidity condition and the relational expression between the humidity correction coefficient, the mass distance and the air water content according to the actual humidity and atmospheric density application conditions, and further rapidly obtaining the neutron absorber dose.
Further, in the step (3), the neutron absorption dose-distance relation is as follows:
where D50(r) is the neutron absorbed dose at a distance r, r represents the distance between the measurement point and the source, rmThe mass distance between the measuring point and the source; k is a radical ofrAnd λ0Are fitting coefficients.
Further, in the step (6), the relationship between the humidity correction coefficient and the moisture content of the humid air at different mass distances adopts a linear relationship: deltaD＝b×wwater+ a; wherein, deltaDThe humidity correction coefficient is the ratio of the neutron absorption dose under different humidity conditions to the neutron absorption dose under the reference humidity condition; w is awaterIs the water content of the humid air; b and a are fitting coefficients which are the slope and intercept of the fitting relation respectively.
Further, in step (7), the relationship between the slope and the mass distance is as follows:
wherein, B1、B2、B3Is a fitting coefficient;
the relation between the intercept and the mass distance is as follows:
wherein A is1、A2、A3Are fitting coefficients.
Further, in the step (2) and the step (4), the neutron absorption dose is calculated by using a ring detector method and a fluence-to-dose mode.
Further, in the step (3), the fitting adopts a piecewise fitting mode to improve the fitting accuracy.
Further, in step (1), the plurality of nuclide constituents include H, C, N, O, Ar; the physical property parameter is mass percent.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a method for quickly acquiring neutron absorption dose considering atmospheric humidity influence, which utilizes neutron absorption dose reference data under a reference humidity condition and obtains a humidity correction coefficient by a relational expression between the humidity correction coefficient and a mass distance as well as air water content, thereby realizing the quick acquisition of a neutron absorption dose field under any given atmospheric humidity condition, solving the problems that the influence of atmospheric humidity on neutron absorption dose is not generally considered in the conventional method for acquiring the neutron absorption dose, and further the distribution accuracy of the prompt neutron absorption dose field is influenced, and the defects that the time consumption is long and the distribution of the neutron absorption dose field cannot be quickly acquired according to any given relative humidity condition exist in the conventional method for acquiring the neutron absorption dose.
Drawings
FIG. 1 is a flow chart of one embodiment of a method for fast neutron absorber dose acquisition that accounts for atmospheric humidity effects in accordance with the present invention;
FIG. 2 is a schematic diagram of a reference neutron transport calculation model and a neutron transport calculation model in an embodiment of the invention;
FIG. 3 is a graphical illustration of neutron absorber dose as a function of distance at baseline relative humidity atmospheric conditions in an embodiment of the invention;
FIG. 4 is a schematic diagram of neutron absorber dose as a function of distance under different relative humidity conditions in an embodiment of the present invention;
FIG. 5 is a graph illustrating the variation of humidity correction factor with moisture content of humid air at different mass distances in an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating the fitting result of the relationship between the humidity correction coefficient and the moisture content of the humid air when r is 250m to 1000m in the embodiment of the present invention;
fig. 7 is a schematic diagram illustrating a fitting result of a relationship between a humidity correction coefficient and a moisture content of humid air when r is 1250m to 1750m according to an embodiment of the present invention;
FIG. 8 is a diagram illustrating a fitting result of a relationship between an intercept a and a mass distance in a humidity correction coefficient fitting according to an embodiment of the present invention;
FIG. 9 is a diagram illustrating a fitting result of a relationship between a slope b and a mass distance in a humidity correction coefficient fitting method according to an embodiment of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and exemplary embodiments.
Referring to fig. 1, a method for fast acquiring neutron absorption dose considering the influence of atmospheric humidity includes the following steps:
step (1) at an atmospheric density of 1.225g/cm3Under the condition, measuring the moisture content W of the humid air corresponding to different relative humidity RHwaterEstablishing a corresponding relation table among the relative humidity, the moisture content of the humid air and the physical parameters of various nuclide components in the humid air, wherein the table is shown in table 1; the multi-nuclide component includes H, C, N, O, Ar; the water content and the physical property parameters are mass percent;
TABLE 1 (atmospheric density 1.225 g/cm)3)
Step (2), establishing a reference neutron transport calculation model under the reference relative humidity atmospheric condition according to the corresponding relation table obtained in the step (1), and obtaining neutron absorption dose parameters at different distances from a source under the reference relative humidity atmospheric condition through a particle transport Monte Carlo numerical simulation method to serve as reference data;
the reference relative humidity is set to be 50%, and the atmospheric density is 1.225g/cm3；
Referring to fig. 2, the reference neutron transport calculation model includes neutron source parameters including neutron number and energy spectrum of neutrons, and composition parameters of 50% relative humidity atmosphere, the neutron source energy spectrum can be obtained through published literature data, and in this embodiment, a neutron energy spectrum of a common hydrogen bomb (wang foundries, et al, handbook of high altitude nuclear explosion effect parameters, beijing: atomic energy press, 2010, page 81) is adopted; the composition of the atmosphere at 50% relative humidity is shown in table 1 in step 1; the neutron absorption dose calculation mode is set as a ring detector method and a fluence-to-dose recording mode;
neutron transport calculation is carried out by adopting ｃA Monte Carlo numerical simulation program MCNP program (wherein MCNP is ｃA calculation program which can simulate the transport process of neutrons, photons and electrons in materials based on ｃA Monte Carlo method, and the function of MCNP is described in detail in Briesmeister J F, 1997, MCNP-A general Monte Carlo N-Particle transport code, Ver.4B, New Mexico: Los Alamos Scientific Laboratory, LA-12625-M), neutron absorption doses at different distances from ｃA source are calculated as shown in FIG. 3, so that the variation of the neutron absorption dose with the distance under the atmosphere condition of reference relative humidity is obtained;
fitting neutron absorption dose and mass distances at different distances from a source under the reference relative humidity atmospheric condition to obtain a relational expression of the neutron absorption dose and the distance under the reference humidity atmospheric condition; the mass distance is the product of the reference atmospheric density and the distance;
the relation between the neutron absorption dose and the distance is as follows:
wherein D is50(r) is the neutron absorption dose at a distance r, r representing the distance between the measurement point and the source, rmThe mass distance between the measuring point and the source is taken as the mass distance; k is a radical ofrAnd λ0Is a fitting coefficient;
in order to improve the fitting precision, fitting is carried out in three sections, and the relation obtained by fitting is as follows:
step (4) respectively establishing neutron transport calculation models with relative humidity of 0%, 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% and 100% according to the corresponding relation table obtained in the step (1), and obtaining data of neutron absorption dose changing along with distance through a Monte Carlo numerical simulation method;
referring to fig. 2, the neutron transport calculation model comprises neutron source parameters and composition parameters of atmospheres with different relative humidity, the neutron source parameters are consistent with the step (1), and the composition parameters of the atmospheres with different relative humidity are shown in table 1; the neutron absorption dose calculation mode is set as a ring detector method and a fluence-to-dose mode; FIG. 4 is a calculated neutron absorber dose as a function of distance for different relative humidity atmospheres;
step (5) dividing the neutron absorption dose obtained in the step (4) by the neutron absorption dose at the corresponding mass distance under the reference humidity condition in the step (2) to obtain the ratio of the neutron absorption dose under different relative humidity atmospheric conditions and under the reference relative humidity atmospheric condition at different mass distances, and taking the ratio as a humidity correction coefficient deltaD；
Step (6), under different mass distances, performing data fitting on the obtained relation between the humidity correction coefficient and the moisture content of the humid air to obtain a relational expression between the humidity correction coefficient and the moisture content of the humid air under different mass distances;
referring to fig. 5, the relationship between the humidity correction factor and the moisture content of the humid air is linear: deltaD＝b×wwater+ a; wherein, deltaDThe ratio of the neutron absorption dose under different humidity conditions to the neutron absorption dose under the reference humidity condition; w is awaterIs the water content of the humid air; b and a are fitting coefficients which are respectively the slope and intercept of a fitting relation;
the slope and intercept in the relational expression between the humidity correction coefficient and the moisture content of the humid air at different mass distances are shown in table 2, and the fitting result of the relational expression between the humidity correction coefficient and the moisture content of the humid air at different mass distances is shown in fig. 6 and fig. 7;
TABLE 2
Step (7), performing data fitting on the relationship between the slope, intercept and mass distance in the relationship between the humidity correction coefficient and the moisture content of the humid air at all different mass distances to obtain a relationship between the fitting coefficient and the mass distance in a humidity correction coefficient fitting mode, as shown in fig. 8 and 9;
the slope is related to the mass distance by:
wherein, B1、B2、B3Is a fitting coefficient;
the relationship between intercept and mass distance is:
wherein A is1、A2、A3Is a fitting coefficient;
and (8) substituting the fitted expression of the slope and the intercept in the step (7) into the relational expression of the humidity correction coefficient and the moisture content of the humid air in the step (6), and integrating to obtain a humidity correction coefficient deltaDDistance r from massmAnd moisture content W of the humid airwaterThe general relation between:
wherein r ismIs the mass distance (in g/cm) between the measuring point and the source point2)，wwaterIs the mass percentage of water in wet air (unit is%);
and (9) calculating a humidity correction coefficient according to the neutron absorber dose reference data under the reference humidity condition and the relational expression between the humidity correction coefficient, the mass distance and the air water content according to the actual humidity and atmospheric density application condition, and further rapidly obtaining the neutron absorber dose.
In another embodiment, the atmospheric density is 1.118g/cm3If the neutron absorption dose of the wet air with the water content of 0.194 percent and 1.164 percent needs to be rapidly obtained, only the reference data in the step (3) and the simulation in the step (8) are neededThe neutron absorption doses at different distances can be rapidly obtained by combining the humidity correction coefficients calculated by the relational expression, and the result is shown in table 3. Wherein the MC value refers to the result calculated by the conventional Monte Carlo numerical simulation method and is used as a reference value for comparison verification. As can be seen from the results in Table 3, the relative deviation between the fast acquisition results given by the present invention and the conventional Monte Carlo numerical simulation results is within 8%.
TABLE 3 (atmospheric density 1.118 g/cm)3)
The above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and it is obvious for those skilled in the art to modify the specific technical solutions described in the foregoing embodiments, or to substitute part of the technical features, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions protected by the present invention.
Claims (7)
1. A neutron absorption dose rapid acquisition method considering the influence of atmospheric humidity is characterized by comprising the following steps:
measuring the moisture content of the humid air and the physical parameters of various nuclide components in the humid air corresponding to different relative humidities under the preset atmospheric density, and establishing a corresponding relation table among the relative humidity, the moisture content of the humid air and the physical parameters of the various nuclide components in the humid air;
step (2), establishing a reference neutron transport calculation model under the reference relative humidity atmospheric condition according to the corresponding relation table obtained in the step (1), and obtaining neutron absorption dose parameters at different distances from a source under the reference relative humidity atmospheric condition through a particle transport Monte Carlo numerical simulation method to serve as reference data;
fitting neutron absorption dose and mass distances at different distances from a source under the reference relative humidity atmospheric condition to obtain a relational expression of the neutron absorption dose and the distance under the reference relative humidity atmospheric condition; the mass distance is the product of the reference atmospheric density and the distance;
step (4) respectively establishing neutron transport calculation models under different relative humidity conditions according to the corresponding relation table obtained in the step (1), and obtaining corresponding data of neutron absorption dose changing along with distance through a Monte Carlo numerical simulation method;
step (5), dividing the neutron absorption dose obtained in the step (4) by the neutron absorption dose at the corresponding mass distance under the reference humidity condition in the step (2), and obtaining the ratio of the neutron absorption dose at different mass distances under different relative humidity atmospheric conditions to the neutron absorption dose under the reference relative humidity atmospheric condition, wherein the ratio is used as a humidity correction coefficient;
step (6), performing data fitting on the obtained relation between the humidity correction coefficient and the moisture content of the humid air at different mass distances to obtain a relational expression between the humidity correction coefficient and the moisture content of the humid air at different mass distances;
step (7), performing data fitting on the relationship between the slope, the intercept and the mass distance in the relationship between the humidity correction coefficient and the moisture content of the humid air at different mass distances to obtain a relationship between the slope and the mass distance and a relationship between the intercept and the mass distance;
step (8), substituting the fitting formulas of the slope and the intercept in the step (7) into the step (6), and integrating to obtain a universal relational expression between the humidity correction coefficient and the mass distance as well as the moisture content of the humid air;
and (9) calculating a humidity correction coefficient according to the neutron absorber dose reference data under the reference humidity condition and the relational expression between the humidity correction coefficient, the mass distance and the air water content according to the actual humidity and atmospheric density application conditions, and further rapidly obtaining the neutron absorber dose.
2. The method for fast obtaining neutron absorber dose considering the influence of atmospheric humidity according to claim 1, wherein:
in the step (3), the relation between the neutron absorption dose and the distance is as follows:
wherein D is50(r) is the neutron absorption dose at a distance r, r representing the distance between the measurement point and the source, rmThe mass distance between the measuring point and the source; k is a radical ofrAnd λ0Are fitting coefficients.
3. The method for fast obtaining neutron absorber dose considering the influence of atmospheric humidity according to claim 2, wherein:
in the step (6), the relationship between the humidity correction coefficient and the moisture content of the humid air at different mass distances adopts a linear relationship: deltaD＝b×wwater+ a; wherein, deltaDThe humidity correction coefficient is the ratio of the neutron absorption dose under different humidity conditions to the neutron absorption dose under the reference humidity condition; w is awaterIs the water content of the humid air; b and a are fitting coefficients which are the slope and intercept of the fitting relation respectively.
4. The method for fast acquiring neutron absorption dose considering the influence of atmospheric humidity according to claim 3, wherein:
in the step (7), the relation between the slope and the mass distance is as follows:
wherein, B1、B2、B3Is a fitting coefficient;
the relation between the intercept and the mass distance is as follows:
wherein A is1、A2、A3Are fitting coefficients.
5. The method for fast acquiring neutron absorption dose considering the influence of atmospheric humidity according to claim 4, wherein: in the step (2) and the step (4), a ring detector method and a fluence-to-dose mode are adopted as a neutron absorption dose calculation mode.
6. The method for fast acquiring neutron absorption dose considering the influence of atmospheric humidity according to claim 5, wherein: in the step (3), the fitting adopts a piecewise fitting mode.
7. The method for fast obtaining neutron absorber dose considering the influence of atmospheric humidity according to any one of claims 1 to 6, wherein: in the step (1), the multiple nuclide components include H, C, N, O, Ar; the physical property parameter is mass percent.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101256241A (en) * | 2008-02-01 | 2008-09-03 | 中国原子能科学研究院 | High-sensitivity neutron dose equivalent instrument |
| CN101671441A (en) * | 2009-09-18 | 2010-03-17 | 苏州大学 | Hydrogel neutron radiation protection material and preparation method thereof |
| CN104361916A (en) * | 2014-09-19 | 2015-02-18 | 中国船舶重工集团公司第七一九研究所 | Typical nuclide monitor of fuel element failure |
| KR101689631B1 (en) * | 2016-08-11 | 2016-12-27 | 한국 천문 연구원 | Analysis system for aviation radiation dose |
| KR102143063B1 (en) * | 2019-02-27 | 2020-08-11 | 서울대학교산학협력단 | Apparatus and method for dose calculation of neutron beam and recording medium storing dose calculation program |
| CN111859675A (en) * | 2020-07-23 | 2020-10-30 | 东华理工大学 | Slurry density correction method based on uranium fission prompt neutron logging data |
| CN112231641A (en) * | 2020-10-16 | 2021-01-15 | 南通大学 | Visibility estimation method based on meteorological data |
| CN112649835A (en) * | 2020-10-23 | 2021-04-13 | 中国人民解放军陆军防化学院 | Single-element air absorption dosage rate measuring method based on numerical integration |
-
2022
- 2022-03-28 CN CN202210316090.XA patent/CN114707393A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101256241A (en) * | 2008-02-01 | 2008-09-03 | 中国原子能科学研究院 | High-sensitivity neutron dose equivalent instrument |
| CN101671441A (en) * | 2009-09-18 | 2010-03-17 | 苏州大学 | Hydrogel neutron radiation protection material and preparation method thereof |
| CN104361916A (en) * | 2014-09-19 | 2015-02-18 | 中国船舶重工集团公司第七一九研究所 | Typical nuclide monitor of fuel element failure |
| KR101689631B1 (en) * | 2016-08-11 | 2016-12-27 | 한국 천문 연구원 | Analysis system for aviation radiation dose |
| KR102143063B1 (en) * | 2019-02-27 | 2020-08-11 | 서울대학교산학협력단 | Apparatus and method for dose calculation of neutron beam and recording medium storing dose calculation program |
| CN111859675A (en) * | 2020-07-23 | 2020-10-30 | 东华理工大学 | Slurry density correction method based on uranium fission prompt neutron logging data |
| CN112231641A (en) * | 2020-10-16 | 2021-01-15 | 南通大学 | Visibility estimation method based on meteorological data |
| CN112649835A (en) * | 2020-10-23 | 2021-04-13 | 中国人民解放军陆军防化学院 | Single-element air absorption dosage rate measuring method based on numerical integration |
Non-Patent Citations (2)
| Title |
|---|
| 张文仲!102205, 毛用泽!102205: "中子弹核爆炸早期核辐射剂量的研究", 中华放射医学与防护杂志, no. 04, 25 August 2001 (2001-08-25) * |
| 李江峰;苏明;熊忠华;高凡;: "基于L-M算法的快中子爆炸物检测方法研究", 核技术, no. 08, 10 August 2018 (2018-08-10) * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116046809A (en) * | 2023-02-07 | 2023-05-02 | 中国科学院西北生态环境资源研究院 | Mountain soil water information acquisition method and device, storage medium and electronic equipment |
| CN116046809B (en) * | 2023-02-07 | 2023-09-05 | 中国科学院西北生态环境资源研究院 | Mountain soil water information acquisition method and device, storage medium and electronic equipment |
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