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单词
thermionic tube
释义
WordReference Random House Unabridged Dictionary of American English © 2024
therm
′
ion
′
ic tube
′
,
[
Electronics.
]
Electronics
a vacuum tube in which the cathode is heated electrically to cause the emission of electrons by thermal agitation. Also called
hot-cathode tube.
1925–30
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更新时间:2025/7/23 17:34:37