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- The cubage of the tube is small and high vacuum will be got very quickly. 计算结果表明：二极管的工作场强低于真空闪络场强；
- The whole apparatus operates under high vacuum. 整个装置在高真空下运转。
- high vacuum tube 高真空电子管
- Diangong Heat tube Vacuum tube heat collector. 电工太阳能热管真空管集热器.
- Diangong Solar vacuum tube heat collector. 电工太阳能真空管集热器.
- Not any air gets into the vacuum tube. 没有空气能进入真空管。
- John Ambrose Fleming invents the vacuum tube. 1904年的今天，约翰·安布鲁斯·弗莱明发明了真空管。
- GID electric high vacuum butterfly valve uses electric device to drive the stemdisc to perform openclose action. GID型-电动高真空蝶是以电动装置驱动阀杆与阀板执行启闭动作。
- An electron tube or a vacuum tube. 电子管或真空管。
- GD high vacuum flapper valve is used to put through or cut off the airflow in vacuum pipeline. GD型高真空挡板阀用于接通或切断真空管路中的气流。
- Lee de Forest invents the vacuum tube. 李.;德福雷斯特发明电子管。
- The difference between leak rate and rate of pressure rise of high vacuum pneumatic operation baffle valve is analyzed. 本文通过高真空气动挡板阀的数据分析来说明漏率和升压率在高真空范围内二者之间的差异。
- GDC-JQelectro high vacuum butterfly valve uses electromagnetic force to directly drive valve disc working. thus to make valve opened ro closed. GDC-J型电磁高真空挡板阀是以电磁力为动力直接带动阀板动作，使阀门开启或关闭。
- A specific vacuum tube which converts light into electrical energy. 把光转换成电能的一种真空管。
- GID electric high vacuum butterfly valve uses electric device to drive the stem and disc to perform open and close action. GID型电动高真空蝶阀是以电动装置驱动阀杆与阀板执行启闭动作。
- According to its shaft seal structure, high vacuum flapper valve is classified into GD-J rubber shaft seal type and GD-J(b)bellows shaft seal type. 高真空挡板阀按轴封结构可分GD-J型橡胶轴封和GD-J(b)型波纹管轴封两种。
- Heat resistance soft vacuum tube avoids damage by hot nozzle. 防热真空软管,免被热吸咀误损。
- GDHigh Vacuum Flapper Valve GD high vacuum flapper valve is used to put through or cut off the airflow in vacuum pipeline. GD型-高真空挡板阀 GD型高真空挡板阀用于接通或切断真空管路中的气流。
- Battery used to maintain the grid potential in a vacuum tube. 能够保持潜藏在真空管内的栅格的电池。
- GID electric high vacuum butterfly valve uses electric device to drive the stem and disc to perfm open and close action. GID型电动高真空蝶阀是以电动装置驱动阀杆与阀板执行启闭动作。
