| 单词 | frequency transformer |
| 释义 | > as lemmasfrequency transformer frequency transformer n. ΚΠ 1893 Jrnl. Soc. Arts 5 May 624/1 The frequency-transformers hitherto used in the laboratory for purposes of research..are not practical for electric-lighting purposes. 1940 Chambers's Techn. Dict. 355/2 Frequency transformer, a static piece of apparatus (e.g. a transformer or mercury-arc convertor) which receives power at one frequency and delivers it at another frequency. < as lemmas |
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