英语词汇“一次系统 primary system;”的读音、翻译、释义、用法及例句-啃外文网

词汇	一次系统 primary system;
释义	见:一次: 一次系统 primary system;
随便看	duration counter duration of attention duration of blast duration of braking duration of charging duration of combustion duration of day duration of dispause duration of disturbance duration of exciting duration of existence duration of exposure duration of franchise duration of freezing duration of guaranty duration of heat duration of ignition duration of insurance duration of life duration of marriage duration of operation duration of oscillation duration of pollution duration of pouring duration of service

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