a frequency in the range used for alternating currents supplying power (commonly 50 or 60 Hz).
| 单词 | θ77218 |
| 释义 | the world > matter > physics > electromagnetic radiation > electricity > electric current > alternating current > [noun] > rate of recurrence > in supplying power (1) power frequency1938 a frequency in the range used for alternating currents supplying power (commonly 50 or 60 Hz). |
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