亚洲国产精品视频中文字幕,毛片亚洲AV无码精品国产午夜,亚洲国产精品色婷婷,国产综合日韩精品第16页

單詞乎

thermionic valves

thermionic valves是什么意思、thermionic valves怎么讀

thermionic valves漢語翻譯

【醫(yī)】 熱離子管, 熱電管(熱陰極整流管)

thermionic valves英語解釋

名詞 thermionic valve:

  1. electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
    同義詞：tube, vacuum tube, thermionic vacuum tube, thermionic tube, electron tube, thermionic valve
0
糾錯