| 单词 | frequency converter |
| 释义 | > as lemmasfrequency converter frequency converter n. a frequency changer. ΘΚΠ society > communication > telecommunication > [noun] > signal > frequency or band of frequencies > frequency changer frequency changer1902 frequency converter1909 1909 Cent. Dict. Suppl. 292/3 Frequency-converter. 1912 F. Bedell & C. A. Pierce Direct & Altern. Current Man. (ed. 2) ix. 291 The usual form of frequency changer or frequency converter consists merely of an induction motor and a separate driving motor. 1957 A. C. Clarke Deep Range xii. 104 This was a simple enough task for the sub's frequency converters; if he wished, Franklin could tune in to any sounds from almost a million cycles a second down to vibrations as sluggish as the slow opening of an ancient, rusty door. 1959 K. Henney Radio Engin. Handbk. (ed. 5) ix. 9 Semiconductor diodes are used over a very wide frequency range (a-f to microwave) as frequency converters. < as lemmas |
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