“twin entry”的概念、定义、翻译、参考文献-科学参考

单词	twin entry
释义	twin entry [`twin `en·trē] ^{MINING ENGINEERING} A pair of parallel entries, one of which is an intake air course and the other the return air course; rooms can be worked from both entries.
随便看	electronic alternating-current voltmeter electronic altimeter electronic angular momentum electronic attitude directional indicator electronic azimuth marker communications package communication speed communications program communications relay station communications satellite communications traffic communication system communications zone indicator communication theory community community antenna television community classification community dial office commutated antenna direction finder commutating capacitor commutating pole commutating reactance commutating reactor commutating zone commutation

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