请输入您要查询的字词：

　

单词 cryogenic pump
释义
cryogenic pump
Physics

  • A vacuum pump in which pressure is reduced by condensing gases on surfaces maintained at about 20 K by means of liquid hydrogen or at 4 K by means of liquid helium. Pressures down to 10−8 mmHg (10−6 Pa) can be maintained; if they are used in conjunction with a diffusion pump, pressures as low as 10−15 mmHg (10−13 Pa) can be reached.

Chemistry

  • A vacuum pump in which pressure is reduced by condensing gases on surfaces maintained at about 20 K by means of liquid hydrogen or at 4 K by means of liquid helium. Pressures down to 10−8 mmHg (10−6 Pa) can be maintained; if they are used in conjunction with a diffusion pump, pressures as low as 10−15 mmHg (10−13 Pa) can be reached.

Chemical Engineering

  • A vacuum pump used to produce very low pressures of 10−6 Pa by the condensation of gases onto the surface kept at low temperatures using liquid hydrogen or liquid helium. It is possible to reduce the pressure further to 10–13 Pa with the combined used of a diffusion pump.
随便看

　

科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。

　

Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号 更新时间：2024/6/28 14:11:34