| 单词 | frequency meter |
| 释义 | > as lemmasfrequency meter frequency meter n. ΚΠ 1906 J. A. Fleming Princ. Electr. Wave Telegr. i. 42 In addition to the voltmeters and ammeters..a frequency meter ought to be provided. 1957 B. L. Ginzton Microwave Measurem. viii. 389 The frequency of the unknown signal can be measured with moderate accuracy by an instrument called the heterodyne frequency meter. < as lemmas |
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