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- vacuum tube emission 电子管发射
- 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。
- An electron tube or a vacuum tube. 电子管或真空管。
- Lee de Forest invents the vacuum tube. 李.;德福雷斯特发明电子管。
- A specific vacuum tube which converts light into electrical energy. 把光转换成电能的一种真空管。
- Heat resistance soft vacuum tube avoids damage by hot nozzle. 防热真空软管,免被热吸咀误损。
- 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。
- X-ray emission from vacuum tubes of television and video display units are also sources of artificial radiation. 其他人工辐射来源包括电视机及视象显示器等,它们的真空管会发放X射线。
- Vacuum tube amplifiers used the first time in coast-to-coast telco circuits. 真空管放大器首次用于大西洋岸至太平洋岸的电信电路中。
- Vacuum tubes require DC voltage sources as well. 真空电子管也要求以直流电压为电源。
- The ancestor of these miniature electronic devices is the vacuum tube. 这些微型电子装置的鼻祖就是真空管。
- Or to reduce cost, add bassoon span of purpose, reduce vacuum tube amount. 或者为了降低成本,有意增大管间距,减少真空管数量。
- This produces light through collisions of the electrons with phosphors on the tube surface.The electrons are produced by electric fields rather than the mionic emission,and the vacuum tubes are much thinner than conventional CRTs. 通过电子管与面上荧光粉相撞而产生光,这里的电子不是通过热发射而是电场产生的,这种真空管要比常规的CRT薄得多。
- All glass vacuum tubes are the key component of solar collectors. 全玻璃真空管是太阳能集热器中的关键部分。
- This produces light through collisions of the electrons with phosphors on the tube surface.The electrons are produced by electric fields rather than the mionic emission, and the vacuum tubes are much thinner than conventional CRTs. 通过电子管与面上荧光粉相撞而产生光,这里的电子不是通过热发射而是电场产生的,这种真空管要比常规的crt薄得多。
- Cathode-ray tube (CRT): Vacuum tube that produces images when its phosphorescent surface is struck by electron Beams. 阴极射线管:一种真空管,当电子束打在其磷光表面会产生影像。
- Battery for supplying a constant positive voltage to the plate of a vacuum tube. 能够产生真空管金属板稳定负电压的电池。