It introduces a space environment simulator control system used to realize ultra low temperature and high vacuum.
介绍一种用于实现超低温、高真空的太空环境模拟器控制系统。
Extraterrestrial Environment: How It Affects the Way Things Work or Do Not Work vacuum and high pressure, low and high temperature, gravity or lack of, geological uncertainty;
第二讲：太空环境：如真空或高压，低温或高温，高重力或低重力以及地质的不确定性是如何影响机械的工作性能的；
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