“pigeon”的概念、定义、翻译、参考文献-科学参考

单词	pigeon
释义	pigeon [`pij·ǝn] ^{VERTEBRATE ZOOLOGY} Any of various stout-bodied birds in the family Columbidae having short legs, a bill with a horny tip, and a soft cere.
随便看	frequency pulling frequency recorder frequency regulator frequency relay frequency response frequency-response curve frequency-response equalization frequency-response trajectory frequency run frequency scan antenna frequency scanning frequency-selective device frequency separation multiplier frequency separator frequency shift frequency-shift converter frequency-shift keyer frequency-shift keying frequency-shift modulation frequency-shift transmission frequency-slope modulation frequency spectrum frequency splitting frequency stability frequency stabilization

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