英语词汇“under plain cover”的读音、翻译、释义、用法及例句-智慧网

词汇	under plain cover
释义	under plain coverunder plain cover1.■(信件、包裹等)没有注明寄发人姓名、地址及内容;用没有注明商号、装有何物的封袋邮寄
随便看	closed-chamber fusion weld closed channel closed chromosome closed chute closed cipher system closed-circuit closed circuit closed-circuit air cooling closed-circuit air turbine closed circuit anesthesia closed circuit anesthesia apparatus closed-circuit ball mill closed-circuit battery closed circuit breathing apparatus closed circuit cell closed-circuit communications system closed-circuit connection closed circuit contact closed-circuit cooling closed-circuit crusher closed-circuit deduster closed-circuit fisling system closed-circuit grinder closed-circuit grinding closed circuit grinding

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