“vacuum-tube amplifier”的概念、定义、翻译、参考文献-科学参考

单词	vacuum-tube amplifier
释义	vacuum-tube amplifier [`vak·yǝm ¦tüb `am·plǝ¦fī·ǝr] ^ELECTRONICS An amplifier employing one or more vacuum tubes to control the power obtained from a local source.
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