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- Diangong Heat tube Vacuum tube heat collector. 電工太陽能熱管真空管集熱器.
- Diangong Solar vacuum tube heat collector. 電工太陽能真空管集熱器.
- Not any air gets into the vacuum tube. 沒有空氣能進入真空管。
- John Ambrose Fleming invents the vacuum tube. 1904年的今天，約翰·安布魯斯·弗萊明發明了真空管。
- An electron tube or a vacuum tube. 電子管或真空管。
- Lee de Forest invents the vacuum tube. 李.;德福雷斯特發明電子管。
- Can all glass vacuum collector tube operate with water inletting? 全玻璃真空集熱管不能頂水運行嗎?
- A specific vacuum tube which converts light into electrical energy. 把光轉換成電能的一種真空管。
- Heat resistance soft vacuum tube avoids damage by hot nozzle. 防熱真空軟管,免被熱吸咀誤損。
- Battery used to maintain the grid potential in a vacuum tube. 能夠保持潛藏在真空管內的柵格的電池。
- Vacuum tube amplifiers used the first time in coast-to-coast telco circuits. 真空管放大器首次用於大西洋岸至太平洋岸的電信電路中。
- Vacuum tubes require DC voltage sources as well. 真空電子管也要求以直流電壓為電源。
- The ancestor of these miniature electronic devices is the vacuum tube. 這些微型電子裝置的鼻祖就是真空管。
- Or to reduce cost, add bassoon span of purpose, reduce vacuum tube amount. 或者為了降低成本，有意增大管間距，減少真空管數量。
- All glass vacuum tubes are the key component of solar collectors. 全玻璃真空管是太陽能集熱器中的關鍵部分。
- Coiled Tubing Operations in Oil and Gas Well Services. 提供了撓性油管的設計及操作推薦作法。
- Cathode-ray tube (CRT): Vacuum tube that produces images when its phosphorescent surface is struck by electron Beams. 陰極射線管:一種真空管,當電子束打在其磷光表面會產生影像。
- Battery for supplying a constant positive voltage to the plate of a vacuum tube. 能夠產生真空管金屬板穩定負電壓的電池。
- The vacuum tube has natural tracing ability against sunlight and it can work when sunlight exists. 真空管對太陽光具有自然跟蹤的能力，只要有太陽光輻射，真空管就可工作；
- Part: Vacuum tube 1. Inner water tank: 304-B 2. Outer water tank: color-steel 3. Attemperator... [相關分類:太陽能，可循環能源,取暖器,熱水器
