“standard pitch”的概念、定义、翻译、参考文献-科学参考

单词	standard pitch
释义	standard pitch [`stan·dǝrd `pich] ^ACOUSTICS A musical pitch based on 440 hertz for tone A; with this standard, the frequency of middle C is 261 hertz.
随便看	double bus-single breaker double-button microphone firing azimuth firing base firing box firing button firing cable firing chamber firing circuit firing data firing hammer firing interval firing jack firing lanyard firing lock firing machine firing mechanism firing pin firing point firing position firing potential firing pressure firing rate firing table firing table elevation

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