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单词
electron vacuum gage
释义
electron vacuum gage
electron vacuum gage
[
i′lek‚trän ′vak·yüm ‚gāj
]
(engineering)
An instrument used to measure vacuum by the ionization effect that an electron flow (from an incandescent filament to a charged grid) has on gas molecules.
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更新时间:2024/12/23 23:21:12