“durain”的概念、定义、翻译、参考文献-科学参考

单词	durain
释义	durain [`du̇´rān] ^GEOLOGY A hard, granular ingredient of banded coal which occurs in lenticels and shows a close, firm texture. Also known as durite.
随便看	frequency modulation-frequency modulation frequency-modulation laser frequency-modulation noise level on carrier frequency modulation-phase modulation frequency-modulation receiver frequency-modulation receiver deviation sensitivity frequency-modulation transmitter frequency-modulation tuner frequency modulator frequency monitor frequency multiplexing frequency multiplier frequency offset frequency-offset transponder frequency optimum traffic frequency polygon frequency prediction chart frequency probabilities frequency pulling frequency recorder frequency regulator frequency relay frequency response frequency-response curve frequency-response equalization

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