CN113125793B - Aviation lifting speed standard device and method - Google Patents
Aviation lifting speed standard device and method Download PDFInfo
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- CN113125793B CN113125793B CN202110424011.2A CN202110424011A CN113125793B CN 113125793 B CN113125793 B CN 113125793B CN 202110424011 A CN202110424011 A CN 202110424011A CN 113125793 B CN113125793 B CN 113125793B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/50—Devices characterised by the use of electric or magnetic means for measuring linear speed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
- G01C5/005—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels altimeters for aircraft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
- G01C5/06—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels by using barometric means
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
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- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses an aviation lifting speed standard device and method, which comprises the following steps: a measuring chamber having an inner space to accommodate a measured member; a plurality of height measuring instruments are arranged in the measuring chamber to monitor the height change of the simulated air pressure of the measuring chamber; the vacuum chamber is connected with the measuring chamber, a gas flow controller is arranged between the vacuum chamber and the measuring chamber, the simulated gas pressure height of the measuring chamber is adjusted through the gas flow controller, and the accurate occurrence of the aviation lifting speed is realized in a negative feedback control mode.
Description
Technical Field
The invention belongs to the technical field of aviation lifting speed measurement, and particularly relates to an aviation lifting speed standard device and method.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The aviation lifting speed parameter refers to the change rate of the flying height of the aircraft, namely the change value of the flying height of the aircraft in unit time, and is a nonlinear function of pressure and time because the height and the pressure are in a nonlinear relation. At present, an aviation lifting speedometer on an aircraft uses a corresponding comprehensive tester for atmospheric data to detect.
However, it has the following problems:
1) At present, the air data comprehensive tester needs to detect lifting speed parameters of various lifting speed meters or dynamic and static pressure systems, but the lifting speed parameters on the air data comprehensive tester do not carry out magnitude value tracing.
2) After the lifting speed module of the air data comprehensive tester is subjected to fault maintenance, the lifting speed module can only adopt similar instruments with similar errors to carry out comparison measurement, and the accuracy of the lifting speed parameter cannot be accurately judged.
3) There is a lack of a measurement standard and corresponding calibration method for the hoist speed parameter. At present, a metering technical mechanism carries out the metering of pressure parameters of the comprehensive atmospheric data tester according to verification regulations and cannot carry out the metering of lifting speed parameters.
4) At present, when an air data comprehensive tester is used for acceptance and periodic traceability, pressure parameters are accepted to be qualified and belong to qualified products, but the lifting speed parameter display or control is abnormal when the air data comprehensive tester is frequently used, so that the problem that the tested piece or the measurement standard problem cannot be accurately judged.
In summary, in order to realize accurate tracing and quantity transmission of the lifting speed parameters and perfect a calibration method for comprehensive testing of the atmospheric data, a set of aviation lifting speed standard device needs to be developed, calibration of lifting speed measurement indication values and control stability of various atmospheric data testers is carried out, a calibration method is compiled according to actual calibration requirements, and a quantity value tracing and transmission system of the atmospheric data testers is continuously perfected.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an aviation lifting speed standard device and an aviation lifting speed standard method.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, the present invention provides an aviation lifting speed standard device, including:
a measuring chamber having an inner space to accommodate a measured member; a plurality of height measuring instruments are arranged in the measuring chamber to monitor the height change of the simulated air pressure of the measuring chamber;
the real empty room is connected with the measuring chamber, and sets up gas flow controller between real empty room and the measuring chamber, under the condition that has certain pressure differential between real empty room and the measuring chamber, through the frequency that the flow solenoid valve opened and shut in the program control gas flow controller, adjusts measuring chamber simulation air pressure high rate of change, realizes simulation air pressure high rate of change stable output, realizes that aviation elevating speed takes place accurately with the negative feedback control mode, can carry out the dynamic calibration of aviation elevating speed instrument.
As a further technical scheme, the measuring chamber is also connected with a plurality of extended measuring chambers, and the measuring chamber and the extended measuring chambers can be switched on and off.
As a further technical scheme, the number of the extension measuring chambers is two, and the two extension measuring chambers are connected with the measuring chamber after being sequentially connected.
As a further technical scheme, the vacuum chamber is provided with a vacuum generator.
As a further technical scheme, the vacuum chamber is connected with a plurality of expansion vacuum chambers, and the vacuum chamber and the expansion vacuum chambers can be opened and closed.
As a further technical scheme, three expansion vacuum chambers are arranged and are connected with the vacuum chamber.
As a further technical scheme, the measuring chamber and the vacuum chamber are both provided with pressure relief valves.
As a further technical scheme, the height measuring instrument is communicated with the handheld terminal, and converts the air pressure data into air pressure height data and transmits the air pressure height data to the handheld terminal.
In a second aspect, the present invention also provides a method of aviation lifting speed standard device as described above, comprising the steps of:
placing the measured piece in a measuring chamber; the gas flow controller is in a completely closed state, the measuring chamber and the vacuum chamber are communicated with the atmosphere, and the communication with the atmosphere is disconnected after the gas flow controller keeps balance with the external atmospheric pressure; vacuumizing the vacuum chamber to reach a vacuum state;
the height measuring instrument measures the air pressure in the measuring chamber in real time and outputs a simulated height change rate signal through data conversion;
a target value of the simulated altitude change rate (aviation lifting speed) is set in a control program of the handheld terminal, the control program reads real-time simulated altitude change rate data output by the simulated altitude measuring instrument, the real-time simulated altitude change rate data are compared with the target value, and if the data are inconsistent, the control program sends a control command to adjust the opening and closing frequency of an electromagnetic valve of the gas flow regulating valve, so that the real-time simulated altitude change rate in the measuring chamber is continuously close to the target value and finally reaches the target value. (ii) a
After reaching the set target value, the gas flow controller is closed.
The embodiment of the invention has the following beneficial effects:
the invention provides a standard device and a method capable of generating a calibration lifting speed parameter, which solve the problem that the calibration cannot be carried out in the past.
The device of the invention can accurately measure the analog height and the analog height change rate by the height measuring instrument, and transmits signals in a digital signal form. A pressure measurement sensor arranged in the height measuring instrument senses the pressure change of the measuring chamber, and a corresponding simulated height change rate (speed increasing and decreasing value) is calculated through a built-in AD acquisition and data processing module.
The device has the advantages that the measuring chamber is expandable, and the effective measuring time of the lifting speed is prolonged. Through increasing the extension room, and then make the space volume of measuring chamber enlarge by times, under the prerequisite of unchangeable gas flow control degree of accuracy, unchangeable vacuum chamber volume, make the effective measuring time of the elevating speed of whole device improve by times.
The device of the invention has the advantages that the vacuum chamber is expandable, and the effective measurement time of the lifting speed is improved. The volume of the whole vacuum chamber is multiplied and enlarged by adding the expansion vacuum chamber, and the lifting speed measuring time of the whole device is multiplied and improved on the premise of not changing the gas flow control accuracy and the volume of the measuring chamber.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic illustration of an airborne airspeed calibration apparatus in accordance with one or more embodiments of the present invention;
FIG. 2 is a schematic illustration of lift speed parameter control according to one or more embodiments of the present disclosure;
in the figure: the space or size between each other is exaggerated to show the position of each part, and the schematic diagram is only used for illustration;
the device comprises a measuring chamber 1, a gas flow controller 2, a vacuum chamber 3, a first extended measuring chamber 4, a second extended measuring chamber 5, a first extended vacuum chamber 6, a second extended vacuum chamber 7, a third extended vacuum chamber 8, a measured object 9, a height measuring instrument 10, a height measuring instrument 11, a height measuring instrument 12, a height measuring instrument 13, a vacuum generator 14 and a handheld terminal 15.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with the directions of up, down, left and right of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
The terms "mounted", "connected", "fixed", and the like in the present invention should be understood broadly, and for example, the terms "mounted", "connected", "fixed", and the like may be fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.
As described in the background of the invention, the prior art has disadvantages, and in order to solve the above technical problems, the present invention provides an aviation lifting speed standard device and method.
In a typical embodiment of the present invention, as shown in fig. 1, an aviation lifting speed standard device is provided, which is composed of a measuring chamber 1, a gas flow controller 2, a vacuum chamber 3, a first extended measuring chamber 4, a second extended measuring chamber 5, a first extended vacuum chamber 6, a second extended vacuum chamber 7, a third extended vacuum chamber 8, a measured object 9, a height measuring instrument 10, a height measuring instrument 11, a height measuring instrument 12, a height measuring instrument 13, a vacuum generator 14 and a handheld terminal 15.
The measuring chamber 1 has an inner space in which the measured object 9 is placed, and it is considered that the measured object 9 is placed in the middle inside the measuring chamber.
A plurality of height measuring instruments are arranged in the measuring chamber, in the embodiment, 4 height measuring instruments are arranged, namely a height measuring instrument 10, a height measuring instrument 11, a height measuring instrument 12 and a height measuring instrument 13, the 4 height measuring instruments are respectively arranged at the position of about 20cm around the measuring chamber at the same height with the measured piece, and the 4 height measuring instruments have the same measuring range, are symmetrically distributed and have high accuracy. The data of the 4 height measuring instruments can be observed in real time through a control program to see whether the data of the 4 height measuring instruments are consistent, if the data of the measuring instruments are inconsistent, the air pressure control is stopped immediately when the air flow fluctuation occurs inside the measuring chamber or the side wall of the measuring chamber leaks, and the air pressure control is continued when the data of the four measuring instruments are consistent after the abnormal problem is eliminated.
The height measuring instrument consists of a pressure sensitive element, an AD acquisition module, a signal conditioning module and a signal output module. When the pressure sensitive element senses external pressure, the sensed physical quantity is converted into a piezoelectric signal and is output to the AD acquisition module, signal conversion is carried out according to the functional relation between the air pressure and the air pressure height, an analog quantity signal corresponding to the analog height change rate is output, and the analog quantity signal is converted by the signal output module to form a digital signal capable of being transmitted remotely.
The height gauge communicates with the hand-held terminal 15, which transmits the height data to the hand-held terminal.
The measuring chamber 1 is communicated with the vacuum chamber 3, a gas flow controller 2 is arranged between the measuring chamber and the vacuum chamber, and the simulated gas pressure height change rate of the measuring chamber can be adjusted through the gas flow controller 2.
The measuring chamber 1 is further connected with a plurality of extended measuring chambers, the number of the extended measuring chambers can be determined according to the actual measuring range requirement, for example, in the embodiment, two extended measuring chambers are provided, which are a first extended measuring chamber 4 and a second extended measuring chamber 5 respectively; the first extended measurement chamber is connected with the second extended measurement chamber, the second extended measurement chamber is connected with the measurement chamber 1, and the first extended measurement chamber and the second extended measurement chamber can be connected with the measurement chamber 1, so that the actual space of the measurement chamber can be increased by 1-2 times.
An automatic program-controlled on-off control valve is arranged between the expansion chamber measuring chamber and the measuring chamber, when the expansion is not needed, the two expansion measuring chambers are closed, and when one to two expansion chambers are needed, the expansion chambers are opened and closed.
The vacuum chamber 3 is provided with a vacuum generator 14 by means of which the vacuum chamber can be brought into a vacuum state.
The vacuum chamber 3 is connected with a plurality of expansion vacuum chambers, the number of the expansion vacuum chambers can be determined according to the actual range requirement, for example, in the embodiment, three expansion vacuum chambers are arranged, which are a first expansion vacuum chamber 6, a second expansion vacuum chamber 7 and a third expansion vacuum chamber 8 respectively; the first, second and third expansion vacuum chambers 6, 7, 8 can all be connected with the vacuum chamber 3, or the first, second and third expansion vacuum chambers 6, 7, 8 can be connected in turn, and then one expansion vacuum chamber at the edge is connected with the vacuum chamber 3, so that the actual space of the vacuum chamber can be increased by 1-3 times.
An on-off control valve capable of automatically controlling program is arranged between the expansion chamber vacuum chamber and the vacuum chamber, when the expansion is not needed, the two expansion vacuum chambers are closed, and when one or two expansion vacuum chambers are needed, the expansion vacuum chambers are opened and closed.
The measuring chamber 1 and the vacuum chamber 3 are provided with pressure release valves, and the measuring chamber and the vacuum chamber are communicated with the atmosphere by opening the pressure release valves, so that the pressure is kept balanced with the external atmospheric pressure.
The device of the invention can accurately measure the analog height and the analog height change rate by the height measuring instrument, and transmits signals in a digital signal form. A pressure measurement sensor arranged in the height measuring instrument senses the pressure change of the measuring chamber, and a corresponding simulated height change rate (speed increasing and decreasing value) is calculated through a built-in AD acquisition and data processing module.
The device can realize the effective measurement time of small-range lifting speed or the effective measurement time of large-range lifting speed by adding an extended measurement chamber or an extended vacuum chamber. In this embodiment, increase 2 extension measuring chambers, can make the space volume of measuring chamber enlarge 1 doubly to 2 doubly, under the prerequisite of unchangeable gas flow control degree of accuracy, unchangeable vacuum chamber volume, the effective measuring time of elevating speed with the elevating speed that makes whole device has improved 1 doubly to 2 doubly. 3 expansion vacuum chambers are added, so that the volume of the whole vacuum chamber is enlarged by 1 to 3 times, and the effective measurement time of the lifting speed of the whole device is improved by 1 to 3 times on the premise of unchanged gas flow control accuracy and unchanged measurement chamber volume. The working principle of the device of the invention is as follows:
when the measured piece 9 is placed in the middle of the measuring chamber 1, 4 height measuring instruments arranged around the measuring chamber measure the simulated height;
confirming that the gas flow controller 2 is in a closed state; opening the pressure release valves of the measuring chamber 1 and the vacuum chamber 3 to atmosphere, keeping balance with the external atmospheric pressure, and closing the pressure release valves of the chambers; vacuumizing the vacuum chamber to reach a vacuum state (less than or equal to 10 Pa);
the air pressure height measuring instrument measures the air pressure in the measuring chamber in real time, and the data is converted to simulate the height and the change rate to be output signals;
inputting a target value of the simulated altitude change rate (aviation lifting speed) in a control program of the handheld terminal, reading the data of the simulated altitude change rate output by the simulated altitude measuring instrument by the control program, comparing the data with the target value, and if the data are inconsistent, sending a control instruction by the control program to control and regulate the opening and closing frequency of an electromagnetic valve of the gas flow regulating valve so that the real-time simulated altitude change rate in the measuring chamber continuously approaches to and finally reaches the target value;
after reaching the set height, the gas flow controller 2 is closed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An aviation lifting speed standard device, characterized by, includes:
a measuring chamber having an inner space to accommodate a measured member; a plurality of height measuring instruments are arranged in the measuring chamber to monitor the height change of the simulated air pressure of the measuring chamber; the height measuring instruments have the same measuring range, symmetrical distribution and high accuracy, and whether the data of the height measuring instruments are consistent or not can be observed in real time through a control program; the vacuum chamber is connected with the measuring chamber, a gas flow controller is arranged between the vacuum chamber and the measuring chamber, the opening and closing frequency of a flow electromagnetic valve in the gas flow controller is controlled through a program, the simulated air pressure height of the measuring chamber is adjusted through the gas flow controller, the high change rate stable output of the simulated air pressure is realized, and the accurate occurrence of the aviation lifting speed is realized in a negative feedback control mode;
the measuring chamber is also connected with a plurality of extended measuring chambers, and the measuring chamber and the extended measuring chambers can be switched on and off;
the vacuum chamber is connected with a plurality of extended vacuum chambers, and the vacuum chamber and the extended vacuum chambers can be switched on and off;
by adding the extended measurement chamber or the extended vacuum chamber, the effective measurement time of the small-range lifting speed or the effective measurement time of the large-range lifting speed is obviously increased.
2. The aviation lifting speed standard device according to claim 1, wherein two extended measurement chambers are provided, and the two extended measurement chambers are connected in sequence and then connected with the measurement chamber.
3. The airborne lift velocity standard apparatus of claim 1 wherein said vacuum chamber is provided with a vacuum generator.
4. The aviation lifting speed standard device according to claim 1, wherein three expansion vacuum chambers are provided, and all three expansion vacuum chambers are connected with the vacuum chamber.
5. The aviation lifting speed standard device according to claim 1, wherein the measuring chamber and the vacuum chamber are provided with pressure relief valves.
6. The aviation lifting speed standard device according to claim 1, wherein the altitude measurement instrument is in communication with the hand-held terminal, and converts the air pressure data into air pressure altitude data to be transmitted to the hand-held terminal.
7. A method according to any one of claims 1 to 6, characterised by the steps of:
placing the measured piece in a measuring chamber; the gas flow controller is in a completely closed state, the measuring chamber and the vacuum chamber are communicated with the atmosphere, and the gas flow controller is disconnected from the atmosphere after keeping balance with the external atmospheric pressure; vacuumizing the vacuum chamber to reach a vacuum state;
setting a target value of the simulated height change rate, comparing the data of the height measuring instrument with the target value, and if the data of the height measuring instrument is inconsistent with the target value, adjusting the opening of the gas flow controller to enable the real-time simulated height change rate in the measuring chamber to finally reach the target value;
after the target value is reached, the gas flow controller is closed.
8. The method of claim 7, wherein said height measuring instrument measures the pressure in the measuring chamber in real time and outputs an analog height rate signal via data conversion.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110424011.2A CN113125793B (en) | 2021-04-20 | 2021-04-20 | Aviation lifting speed standard device and method |
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| CN202110424011.2A CN113125793B (en) | 2021-04-20 | 2021-04-20 | Aviation lifting speed standard device and method |
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| CN113125793A CN113125793A (en) | 2021-07-16 |
| CN113125793B true CN113125793B (en) | 2023-04-07 |
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| CN115420256B (en) * | 2022-11-04 | 2023-03-24 | 开拓导航控制技术股份有限公司 | Height measuring device, aircraft and height measuring system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106184813A (en) * | 2016-08-18 | 2016-12-07 | 武汉市天毅达测控科技有限公司 | Atmospheric parametric synthesis tester |
| CN108106810A (en) * | 2017-12-19 | 2018-06-01 | 北京航空航天大学 | A kind of flight atmospheric parameter calibration experiments device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5961705B2 (en) * | 2012-12-04 | 2016-08-02 | 旭化成株式会社 | Barometric altimeter and indoor compatible barometric altimeter |
| EP2988094A4 (en) * | 2013-05-31 | 2017-03-22 | Asahi Kasei Kabushiki Kaisha | Device for identifying changes in vertical direction using pressure measurement values |
| CN109856327B (en) * | 2019-01-16 | 2023-11-28 | 徐立杰 | Device and method for determining water content of measured substance through humidity measurement |
| CN110954138B (en) * | 2019-12-20 | 2021-05-04 | 湖南智航联测科技有限公司 | Air pressure altimeter detection method based on portable detection equipment |
| CN111537142A (en) * | 2020-05-06 | 2020-08-14 | 大冶特殊钢有限公司 | Calibration device and calibration method for absolute pressure transmitter |
| CN111965389B (en) * | 2020-06-24 | 2022-02-15 | 合肥工业大学 | Vane-rotating pump pumping speed calibration device based on stm32 single-chip microcomputer and application method thereof |
| CN112525152B (en) * | 2020-12-14 | 2022-12-27 | 北京空间机电研究所 | Quick response high accuracy atmospheric pressure altitude analog system |
-
2021
- 2021-04-20 CN CN202110424011.2A patent/CN113125793B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106184813A (en) * | 2016-08-18 | 2016-12-07 | 武汉市天毅达测控科技有限公司 | Atmospheric parametric synthesis tester |
| CN108106810A (en) * | 2017-12-19 | 2018-06-01 | 北京航空航天大学 | A kind of flight atmospheric parameter calibration experiments device |
Non-Patent Citations (1)
| Title |
|---|
| 某大气数据计算机自动测试系统的设计;陈学江等;《空军工程大学学报(自然科学版)》;20020625(第03期);第1-6页 * |
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