By means of wave machine and vortex mill, it is a successful to grind tired tyre and other materials under the cryogenic environment.

本文将气波制冷技术与涡旋式气流粉碎机结合，成功地实现了胎面胶粒和其它物料的低温粉碎。

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But conventional methods are unuseful as the tiny displacement is hard to detect under cryogenic environment where superconductor works.

由于超导体需运行在极低温环境，运用常规方法难以对超导体的微小位移进行测量。

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The space environment, combined with mechanical and cryogenic refrigeration systems using hydrogen and helium, chill the coldest instruments to 0.1 kelvin in four sequential steps.

利用太空的环境，以及机械和氢和氦的冷冻系统，分4个步骤把这个最冷的仪器冷却到只有0.1开尔文。

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