| 释义 |
thermionic vacuum tube θə:miˈɔnikˈvækjuəmtju:b
基本英英近义反义
n.热离子真空管
Noun:
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope近义词 tube管子vacuum tube真空管electron tube真空管thermionic tube物热离子管…thermionic valve物热离子管… |