| 单词 | valve voltmeter |
| 释义 | > as lemmasvalve 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. < as lemmas |
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