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单词 valve voltmeter
释义

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valve voltmeter
valve voltmeter n.
ΚΠ
1925 Year-bk. Wireless Telegr. 847 When a control room is some distance from the transmitter it is usual to install a valve voltmeter with a slideback which either measures the voltage across the output of the main amplifier or indicates when a certain voltage is exceeded.
extracted from valven.1
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更新时间:2026/6/12 15:02:06