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- Based on vacuum tube slight variation equivalent circuit analysis, four kinds of output circuits used in vacuum tube headphone amplifier generally are analyzed. 摘要以电子管微变等效电路分析为基础，分析了在电子管耳机放大器中常用的4种输出级电路。
- Ternary boride based cermet cladding material was prepared by in situ reaction and liquid phase sintering technology in vacuum furnace. 在真空烧结炉中通过原位反应液相烧结工艺制备出三元硼化物基金属陶瓷覆层。
- 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。
- Technology in Vacuum Casting for Heat Resis-tance Alloy Vane 高温合金叶片的真空精铸工艺
- V: Gauge is scaled in vacuum value only. 用于真空表刻度。
- Cr or Cr - Ti alloy was used in vacuum evaporation. 以金属铬和铬钛合金进行真空蒸镀。
- 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。
- A Study of Hollow Cathode Arc Welding Technology in Vacuum and Equipment 真空空心阴极电弧焊接设备和工艺研究
- 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。
- Computer technology in all its phases from hardware to software have become less expensive. 电脑技术从硬体到软体的各个方面都变得较为便宜了。
- An electron tube or a vacuum tube. 电子管或真空管。
- Application of Coal Blending Technology in C.P.P. 掺配技术在选煤厂中的应用。
- Lee de Forest invents the vacuum tube. 李.;德福雷斯特发明电子管。
- Computer Music Technology in Practice II. 电脑音乐技术与实践2。
- Application of Green Technology in Silk. 绿色新技术在丝绸上的应用。
- Application of WEB Technology in El. WEB技术在电力生产中的应用。
- Massachusetts institute of technology in the u. S. 美国的麻省理工学院。
- No.overflow,freezing steam and lether solid remains in vacuum room. 真空腔内不会遗留冷凝蒸气及皮张固体残留物；
