词汇	check non-return valve
释义	check non-return valve 止逆阀
随便看	ultraviolet photomicrography ultra violet photomicrography ultra-violet photomicrography ultraviolet photomultiplier ultraviolet photo multiplier ultraviolet photon ultraviolet photooxidation ultraviolet-photopolymerization ultraviolet photoresistor ultra-violet photoresistor ultraviolet photosensitive cell ultraviolet phototherapy ultraviolet physics ultraviolet pick-up tube ultraviolet pigmentation effect ultraviolet plate Ultra-Violet Plume Instrument ultraviolet point ultraviolet polarimeter ultraviolet polarizing prism ultraviolet-preionization Ultraviolet Programmable Read-Only Memory ultraviolet projection exposure machine ultraviolet projection system ultraviolet PROM erasure lamp