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1)  XHV
极高真空
1.
Characteristics of flow-separating calibrator for UHV/XHV;
分流法超高/极高真空校准装置性能研究
2.
REVIEW OF F. WANTANABE′S STUDY ON XHV MEASUREMENT;
渡边文夫的极高真空测量研究评介
3.
A novel technique has been successfully developed to calibrate the ultra high vacuum(UHV) and extra high vacuum(XHV),which consists of XHV/UHV chambers,a flow separation and a gas supply.
超高/极高真空校准装置由极高真空(XHV)系统、超高真空(UHV)系统、流量分流系统和供气系统四部分组成。
2)  Extreme high vacuum
极高真空
1.
The wake shield facitity(WSF) extreme high vacuum system makes use of the property that its orbiting velocity is several times higher than the ambient atmosphere s thermal velocity,leading to a very high pumping by space,hence a rarefaction region up to extreme high vacuum is produced in the wake rigion of WSF.
轨道分子屏真空系统,是利用分子屏轨道飞行速度远大于轨道环境大气的平均热运动速度,使空间环境对分子屏产生理想的抽速,在尾部形成气体分子的稀化区,达到极高真空
3)  hot cathode XHV ionization gauge
热阴极极高真空电离规
4)  UHV/XHV calibration
超高/极高真空校准
1.
The discussion centered on the strengths and weaknesses of the existing UHV/XHV calibration technologies,including molecular beam method,pressure attenuation method,conduction modulation method and flow division method.
本文概述了在超高/极高真空校准方面的研究进展。
5)  UHV/XHV system
超高/极高真空系统
6)  ultimate vacuum
极限真空
1.
Discussion on condition testing the degree of ultimate vacuum of ultrahigh vacuum diffuse pump oil;
超高真空扩散泵油极限真空测试条件的探讨
补充资料:超高真空
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性质:压力低于10-6Pa的气态空间。在超高真空条件下可以获得免于污染的清洁固体表面。现在多用无油超高真空系统产生。该系统主要由预抽泵、主体泵和金属阀门组成。常用的预抽泵有分子筛吸附泵或机械泵加分子筛吸附阱。主体泵有钛泵、钛升华泵、弹道式钛泵等,真空度可达10-9Pa。

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