“double-button microphone”的概念、定义、翻译、参考文献-科学参考

单词	double-button microphone
释义	double-button microphone [¦dǝb·ǝl ¦bǝt·ǝn `mī·krǝ´fōn] ^{ENGINEERING ACOUSTICS} A carbon microphone having two carbon-filled buttonlike containers, one on each side of the diaphragm, to give twice the resistance change obtainable with a single button. Also known as differential microphone.
随便看	gravitational settling gravitational sliding gravitational systems of units gravitational tide gravitational water gravitational wave gravitino gravitoelectric field gravitomagnetic field gravitometer graviton gravitropism gravity gravity anomaly gravity bar gravity bed gravity cell gravity chute gravity classification gravity-collapse structure gravity concentration gravity conveyor gravity corer gravity dam gravity drainage

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