“vacuum breaker”的概念、定义、翻译、参考文献-科学参考

单词	vacuum breaker
释义	vacuum breaker [`vak·yǝm ´brāk·ǝr] ^ENGINEERING A device used to relieve a vacuum formed in a water supply line to prevent backflow. Also known as backflow preventer.
随便看	primary crater primary creep primary crusher primary culture primary cyclone primary decomposition primary detector primary dip primary drilling primary electron primary emission primary energy primary excavation primary explosive primary extinction primary fabric primary fault primary fission products primary flat joint primary flow primary focus primary frequency primary-frequency standard primary front primary fuel cell

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