光学元件是在地面重力环境中进行的加工、检测和装调，而在轨工作环境则是微重力环境，这要求光学元件具有高的静态刚度。
Optical elements are processed, tested and aligned undergravity load case, they works under the microgravity environment, the supportstructure must have large static stiffness.
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；
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;
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