“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	gross vehicle weight gross weight grothite Grotthus' chain theory ground ground absorption ground-air ground anchor ground area ground-based navigation aid ground bed ground block ground cable ground chain ground check ground-check chamber ground circuit ground clutter ground coal ground conductivity ground control ground-controlled approach ground-controlled approach minimums ground-controlled approach radar ground-controlled interception

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