“double check valve (DCV)”的概念、定义、翻译、参考文献-科学参考

单词	double check valve (DCV)
释义	double check valve (DCV) 双止回阀
随便看	relay automatic telephone system relay base relay bay relay board relay box relay broadcast station relay bungalow relay cabinet relay calculator relay cell relay center relay channel relay check-in check-out register relay chest relay circuitry relay clutch relay comparator relay computer relay contact relay-contactor relay contactor control relay contact welder relay controller relay control system relay core

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