请输入您要查询的英文单词:
单词
vacuum valve
释义
vacuum valve
noun
1.
:
safety valve 1b
2.
chiefly Britain
:
vacuum tube
3.
:
a vacuum-tube rectifier
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mannite
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manno
mannonic
mannonic acid
mannose
mannuronic
mannuronic acid
mano-
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更新时间:2025/11/22 9:14:55