CN115479818A - Polar region water-containing simulated lunar soil and local section sample preparation device - Google Patents
Polar region water-containing simulated lunar soil and local section sample preparation device Download PDFInfo
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- CN115479818A CN115479818A CN202211069990.5A CN202211069990A CN115479818A CN 115479818 A CN115479818 A CN 115479818A CN 202211069990 A CN202211069990 A CN 202211069990A CN 115479818 A CN115479818 A CN 115479818A
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- 239000002689 soil Substances 0.000 title claims abstract description 86
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 238000005056 compaction Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000003068 static effect Effects 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 239000000523 sample Substances 0.000 claims description 44
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 24
- 230000000712 assembly Effects 0.000 claims description 15
- 238000000429 assembly Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims 2
- 238000011160 research Methods 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000005070 sampling Methods 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 abstract description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A polar region water-containing simulated lunar soil and local section sample preparation device relates to a sample preparation device. The invention aims to solve the problem that the existing profile sample for water-containing simulated lunar soil physical mechanical property research and drilling sampling can not meet the requirement of lunar exploration research. The invention comprises a static load press, a pressure compaction pressing block and a low-temperature compaction mechanism; the closely knit subassembly of low temperature sets up on the platform of static pressure machine, and the closely knit mechanism of low temperature is located the below of the pressure aircraft nose of static pressure machine, and the closely knit briquetting fixed mounting of pressure is in the middle part of pressure aircraft nose lower surface, and the closely knit briquetting of pressure is located the top of the closely knit mechanism of low temperature. The invention belongs to the technical field of space resource detection.
Description
Technical Field
The invention relates to a sample preparation device, and belongs to the technical field of space resource detection.
Background
Under the background of basically completing the moon exploration engineering of the three phases of winding, falling and returning, the moon exploration four-phase engineering emphatically explores the moon pole area; china predicts that project tasks of lunar exploration in the fourth phase are implemented in 2024, unmanned autonomous sampling and analysis in the south pole area of the moon are realized; due to the special geological background and the rail running characteristics of the moon polar region, a permanent shadow region which can not be irradiated by the sun all the time exists; the permanent shadow area is an area where volatile components such as water and the like are enriched, and important information of the long-term evolution of the moon is stored; the water content, the attached state and the distribution characteristics of the south pole permanent shadow area of the moon are obtained through detection, so that the formation and enrichment mechanism of water can be revealed, and the method has important significance for human to know the moon.
At present, the research on the physical properties of water ice substances in the section of lunar soil in an polar region is less, and the water-containing lunar soil sample simulated on the ground is difficult to meet the indexes of similarity, equivalence, uniformity and the like of water ice in real lunar soil to achieve the expected target; the water ice substance ground simulation and the mechanical property research thereof are the precondition and guarantee foundation for developing the lunar soil water ice substance detection research; the similarity, equivalence and the like of the simulated lunar soil and the real lunar soil can directly influence the credibility of ground test verification of the submerged machine and even determine the success or failure of a detection task; therefore, research on physical and mechanical properties of water-containing simulated lunar soil and preparation of section samples for drilling sampling are problems to be solved urgently at present.
Disclosure of Invention
The invention provides a preparation device for a water-containing simulated lunar soil and a local section sample in an polar region, aiming at solving the problem that the existing section sample for water-containing simulated lunar soil physical and mechanical property research and drilling sampling can not meet the requirement of lunar exploration research.
The technical scheme adopted by the invention for solving the problems is as follows: the invention comprises a static load press, a pressure compaction pressing block and a low-temperature compaction mechanism; the closely knit subassembly of low temperature sets up on the platform of static load press, and the closely knit mechanism of low temperature is located the below of the pressure aircraft nose of static load press, and the closely knit briquetting fixed mounting of pressure is at the middle part of pressure aircraft nose lower surface, and the closely knit briquetting of pressure is located the top of the closely knit mechanism of low temperature.
Further, the low-temperature compaction mechanism comprises a lunar soil barrel, a low-temperature liquid nitrogen box and a plurality of sensor components; the lunar soil barrel is arranged in the low-temperature liquid nitrogen box, and the plurality of sensor assemblies are sequentially inserted on the outer wall of the lunar soil barrel from top to bottom.
Further, each sensor assembly comprises a temperature sensor, a sensor sleeve and an outer hexagon bolt; the outer wall of the lunar soil barrel is provided with a through hole, an outer hexagon bolt is fixed at the through hole on the outer wall of the lunar soil barrel, the axis of the outer hexagon bolt coincides with the axis of the through hole, a temperature sensor is inserted into the outer hexagon bolt, a probe of the temperature sensor penetrates through the through hole and is arranged in the lunar soil barrel, a sensor sleeve is sleeved on the temperature sensor, and the sensor sleeve is screwed on the outer hexagon bolt.
Further, each sensor component also comprises a raw material belt; the raw material area twines on temperature sensor, and the raw material area is located between sensor sleeve outer end inner wall and temperature sensor's the outer wall.
Further, the temperature sensor is a platinum resistance temperature sensor.
Furthermore, the lunar soil barrel is a cylindrical barrel body with an opening at the upper end, the edge of the opening at the upper end of the lunar soil barrel is provided with an outer edge extending outwards, and the upper surface of the outer edge is uniformly provided with a plurality of connecting holes along the circumferential direction.
Furthermore, the outer wall of the bottom of the lunar soil barrel is provided with a reinforcing rib which is a right-angled triangular plate body.
Furthermore, the plurality of sensor assemblies are six sensor assemblies, two sensor assemblies are symmetrically arranged on the outer wall of the upper part of the lunar soil barrel, two sensor assemblies are symmetrically arranged on the outer wall of the middle part of the lunar soil barrel, and two sensor assemblies are symmetrically arranged on the outer wall of the lower part of the lunar soil barrel.
The beneficial effects of the invention are: according to the invention, the section sample is prepared in a pressure compaction mode, when a sample with a larger compaction height is compacted, the phenomenon that the upper part has high compaction and the bottom has low compaction, namely a pressure saturation effect, also called a granary effect, can occur, and in the working process of the invention, when the compaction height is less than 86mm, the pressure intensity on the particles on the bottom surface is approximately equal to the pressure intensity on the upper surface when the upper surface of the particles is pressed, so that the prepared sample has more uniform relative compaction; compared with the prior art, the invention prepares high simulated lunar soil with similarity and equivalence with real lunar soil water ice by a method of water mixing freezing and cementing, solves the problem of research on the conventional polar region water-containing lunar soil simulation method, and provides sample support for a ground verification test of sampling drilling load characteristics; compared with the prior art, the water-containing simulated lunar soil prepared by the preparation scheme of 'water mixing' has the advantages of good uniformity, high particle cementation strength, low energy consumption, short preparation period and easier realization of the preparation process; compared with the prior art, the compactness of the section sample is reconstructed in a layering static compaction mode, the compactness uniformity of the section sample is good, the disturbance to moisture in the compaction process is reduced, and the similarity and the equivalence of the section of the simulated lunar soil and the real lunar soil are greatly improved; compared with the prior art, the method has the advantages that freezing and cementing are carried out in a gradient refrigeration mode, frost heaving cracks of the sample caused by rapid freezing are reduced, and the percent of pass of the lunar soil sample is ensured.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic perspective view of a low temperature densification mechanism;
FIG. 3 is a schematic structural view of a sensor assembly;
fig. 4 is a front sectional view of a cryogenic densification mechanism.
Detailed Description
The first specific implementation way is as follows: the embodiment is described by combining with figure 1, and the polar region water-containing simulated lunar soil and local section sample preparation device comprises a static load press 1, a pressure compacting pressure block 2 and a low-temperature compacting mechanism 3; the dense subassembly 3 of low temperature sets up on the platform 101 of static pressure machine 1, and the dense mechanism 3 of low temperature is located the below of the pressure aircraft nose 101 of static pressure machine 2, and the dense briquetting 2 fixed mounting of pressure is in the middle part of pressure aircraft nose 101 lower surface, and the dense briquetting 2 of pressure is located the top of the dense mechanism 3 of low temperature.
The second embodiment is as follows: the embodiment is described with reference to fig. 2 and 4, and the low-temperature compacting mechanism 3 of the polar region water-containing simulated lunar soil and local section sample preparation device of the embodiment comprises a lunar soil barrel 301, a low-temperature liquid nitrogen tank 302 and a plurality of sensor assemblies 303; the lunar soil barrel 301 is arranged in the low-temperature liquid nitrogen box 302, and the plurality of sensor assemblies 303 are sequentially inserted on the outer wall of the lunar soil barrel 301 from top to bottom.
The lunar soil barrel 301 is made of 304 steel and internally provided with a hollow cylinder with the outer diameter of 60mm, the lunar soil barrel 301 is 180mm in diameter, 300mm in height and 5mm in wall thickness, and the roughness of the inner wall of the lunar soil barrel 301 is required to be Ra1.6;
low temperature liquid nitrogen case 302 realizes that the sample freezes to be glued, adopts 304 steel, and thickness is 4mm, and the appearance adopts square design, and is convenient fixed with the frame, is equipped with hollow post 304 in the lunar soil bucket 301, and the lower extreme of hollow post 304 and the interior bottom fixed connection of lunar soil bucket 301, bottom surface are equipped with the through-hole in the lunar soil bucket 301, through-hole and the inner chamber intercommunication of hollow post 304, the interior bottom surface of low temperature liquid nitrogen case 302 is equipped with the slotted hole, the slotted hole passes through the through-hole of lunar soil bucket 301 bottom surface and the inner chamber intercommunication of hollow post 304, and when the bucket exocoel was poured into to the liquid nitrogen, the liquid nitrogen formed through the bottom slotted hole of low temperature liquid nitrogen case 302 and the inner chamber of hollow post 304 and link up.
Other components and connections are the same as those in the first embodiment.
The third concrete implementation mode: referring to the present embodiment described with reference to fig. 2 and 3, each sensor assembly 303 of the polar region water-containing simulated lunar soil and partial cutaway sample preparation apparatus of the present embodiment includes a temperature sensor 3031, a sensor sleeve 3032, and an outer hexagon bolt 3033; the outer wall of the lunar soil barrel 301 is provided with a through hole, an outer hexagon bolt 3033 is fixed at the through hole on the outer wall of the lunar soil barrel 301, the axis of the outer hexagon bolt 3033 is overlapped with the axis of the through hole, a temperature sensor 3031 is inserted in the outer hexagon bolt 3033, a probe of the temperature sensor 3031 penetrates through the through hole and is arranged in the lunar soil barrel 301, a sensor sleeve 3032 is sleeved on the temperature sensor 3031, and a sensor sleeve 3032 is screwed on the outer hexagon bolt 3033.
Other components and connection relationships are the same as those in the second embodiment.
The fourth concrete implementation mode: referring to fig. 3 for describing the present embodiment, each sensor assembly 303 of the polar region water-containing simulated lunar soil and partial section sample preparation device according to the present embodiment further includes a raw material belt 3034; the raw material tape 3034 is wound on the temperature sensor 3031, and the raw material tape 3034 is located between the inner wall of the outer end of the sensor sleeve 3032 and the outer wall of the temperature sensor 3031. Other components and connection relationships are the same as those in the third embodiment.
The fifth concrete implementation mode: referring to the embodiment described above with reference to fig. 3, the temperature sensor 3031 of the polar region aqueous simulated lunar soil and partial cross-sectional sample preparation apparatus according to the embodiment is a platinum resistance temperature sensor. Other components and connection relationships are the same as those in the third embodiment.
The sixth specific implementation mode: referring to fig. 2 and 4, the lunar soil barrel 301 of the polar region water-containing simulated lunar soil and local cross-section sample preparation device according to the present embodiment is a cylindrical barrel body with an open upper end, an outer edge 3011 extending outwards is provided at the edge of the open upper end of the lunar soil barrel 301, and a plurality of connection holes 3012 are uniformly distributed on the upper surface of the outer edge 3011 along the circumferential direction. Other components and connection relationships are the same as those in the second embodiment.
The seventh embodiment: referring to fig. 4, the present embodiment is described, in which a reinforcing rib 3013 is provided on the outer wall of the bottom of the lunar soil barrel 301 of the polar water-containing simulated lunar soil and local cross-section sample preparation device according to the present embodiment, and the reinforcing rib 3013 is a right-angled triangular plate. Other components and connection relations are the same as those of the sixth embodiment.
The specific implementation mode is eight: referring to fig. 2 and 4, the plurality of sensor modules 303 of the apparatus for preparing a water-containing simulated lunar soil and a local profile sample in an polar region according to the present embodiment means six sensor modules, two sensor modules 303 are symmetrically installed on the outer wall of the upper portion of a lunar soil barrel 301, two sensor modules 303 are symmetrically installed on the outer wall of the middle portion of the lunar soil barrel 301, and two sensor modules 303 are symmetrically installed on the outer wall of the lower portion of the lunar soil barrel 301. Other components and connection relationships are the same as those in the second embodiment.
Principle of operation
Pouring a certain amount of dry soil sample into the lunar soil barrel 301; hammering the sample by a compaction hammer at a frequency of 40-60 times per minute, and simultaneously knocking the outer wall of the lunar soil barrel 301 by another person by a vibrating fork at a frequency of 120-150 times to-and-fro per minute; adding soil for many times and repeating the actions for 3-5 times, and hammering the sample and knocking the lunar soil barrel 301 by adding a pile casing when the height of the sample exceeds the upper surface of the lunar soil barrel 301; after the last layer of sample is added, taking down the protective cylinder, scraping the surface, and weighing; adopting layered static force for compaction, wherein the characteristic value of each layer of compacted height is less than 86mm, determining the compacted height according to the scale marked on the compacted block, keeping the pressure for 30s for pressure relief after compacting to the specified height, and roughening the upper surface when each layer is compacted so as to prevent the sample from being segmented; reducing the temperature of the sample from room temperature to-20 ℃ by adopting a normal temperature freezer; then, a low-temperature freezer is adopted to cool the sample to-40 ℃; then, putting the sample into an ultralow temperature freezer to reduce the temperature to-80 ℃; finally, before the test is started, the sample is taken out of a refrigerator at minus 80 ℃ and placed in a low-temperature liquid nitrogen box 302 for three-stage cooling.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A polar region water-containing simulated lunar soil and local section sample preparation device is characterized in that: the polar region water-containing simulated lunar soil and local section sample preparation device comprises a static load press machine (1), a pressure compaction pressing block (2) and a low-temperature compaction mechanism (3); the dense subassembly of low temperature (3) sets up on platform (101) of static load press (1), and the dense mechanism of low temperature (3) are located the below of pressure aircraft nose (101) of static load press (2), and the dense briquetting of pressure (2) fixed mounting is in the middle part of pressure aircraft nose (101) lower surface, and the dense briquetting of pressure (2) are located the top of the dense mechanism of low temperature (3).
2. The polar region water-containing simulated lunar soil and local profile sample preparation device as claimed in claim 1, wherein: the low-temperature compaction mechanism (3) comprises a lunar soil barrel (301), a low-temperature liquid nitrogen box (302) and a plurality of sensor assemblies (303); the lunar soil barrel (301) is arranged in the low-temperature liquid nitrogen box (302), and the plurality of sensor assemblies (303) are sequentially inserted on the outer wall of the lunar soil barrel (301) from top to bottom.
3. The polar region water-containing simulated lunar soil and local profile sample preparation device as claimed in claim 2, wherein: each sensor assembly (303) comprises a temperature sensor (3031), a sensor sleeve (3032) and an outer hex bolt (3033); the outer wall of the lunar soil barrel (301) is provided with a through hole, an outer hexagon bolt (3033) is fixed at the through hole on the outer wall of the lunar soil barrel (301), the axis of the outer hexagon bolt (3033) is overlapped with the axis of the through hole, a temperature sensor (3031) is inserted in the outer hexagon bolt (3033), a probe of the temperature sensor (3031) penetrates through the through hole to be arranged in the lunar soil barrel (301), a sensor sleeve (3032) is sleeved on the temperature sensor (3031), and the sensor sleeve (3032) is screwed on the outer hexagon bolt (3033).
4. The apparatus for preparing a polar region water-containing simulated lunar soil and local profile sample according to claim 3, wherein: each sensor assembly (303) further comprises a raw material tape (3034); the raw material belt (3034) is wound on the temperature sensor (3031), and the raw material belt (3034) is located between the inner wall of the outer end of the sensor sleeve (3032) and the outer wall of the temperature sensor (3031).
5. The apparatus for preparing a polar region water-containing simulated lunar soil and local profile sample according to claim 3, wherein: the temperature sensor (3031) is a platinum resistance temperature sensor.
6. The polar region water-containing simulated lunar soil and local profile sample preparation device as claimed in claim 2, wherein: lunar soil bucket (301) are the cylindrical staving of upper end open-ended, and lunar soil bucket (301) upper end open-ended edge is equipped with outside outer edge (3011) that extends outward, and the upper surface along the circumferencial direction equipartition of outer edge (3011) is equipped with a plurality of connecting hole (3012).
7. The apparatus for preparing a polar region water-containing simulated lunar soil and local profile sample according to claim 6, wherein: the outer wall of lunar soil barrel (301) bottom is equipped with strengthening rib (3013), strengthening rib (3013) are right angled triangle plate body.
8. The polar region water-containing simulated lunar soil and local profile sample preparation device as claimed in claim 2, wherein: the plurality of sensor assemblies (303) are six sensor assemblies, two sensor assemblies (303) are symmetrically arranged on the outer wall of the upper part of the lunar soil barrel (301), two sensor assemblies (303) are symmetrically arranged on the outer wall of the middle part of the lunar soil barrel (301), and two sensor assemblies (303) are symmetrically arranged on the outer wall of the lower part of the lunar soil barrel (301).
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| CN202211069990.5A CN115479818A (en) | 2022-09-02 | 2022-09-02 | Polar region water-containing simulated lunar soil and local section sample preparation device |
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| CN202211069990.5A CN115479818A (en) | 2022-09-02 | 2022-09-02 | Polar region water-containing simulated lunar soil and local section sample preparation device |
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|---|---|---|---|---|
| CN1854734A (en) * | 2005-04-20 | 2006-11-01 | 中交第一公路勘察设计研究院 | Testing mould system and its operating method for triaxial experimental disturbed soil testing piece |
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| CN113984603A (en) * | 2021-09-18 | 2022-01-28 | 中国科学院地质与地球物理研究所 | Low water content and H isotope composition simulated lunar soil preparation experimental device |
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2022
- 2022-09-02 CN CN202211069990.5A patent/CN115479818A/en active Pending
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| CN1854734A (en) * | 2005-04-20 | 2006-11-01 | 中交第一公路勘察设计研究院 | Testing mould system and its operating method for triaxial experimental disturbed soil testing piece |
| CN103776552A (en) * | 2012-10-18 | 2014-05-07 | 威海震宇智能科技有限公司 | Large-aperture temperature sensor |
| CN104122381A (en) * | 2014-07-08 | 2014-10-29 | 北京航空航天大学 | High and low temperature vacuum lunar soil environment simulator |
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| CN105300768A (en) * | 2015-11-19 | 2016-02-03 | 北京卫星制造厂 | Preparation and detection method of superhigh-compactness lunar soil simulant |
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