Check valve is also called the reflux valve, non - return valve.

止回阀又称为逆流阀、逆止阀 、 肯压阀、单向阀.

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Unipolar non - return - to - zero ( NRZ ) waveform and its power spectrum.

单极性不 归零码 ( NRZ ) 的波形及其功率谱.

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Including the structure of the non - return valve.

包括各种结构的止回阀.

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Working medium inlet and exhaust non - return valves balance hole for Stirling engine is introduced.

对热气机工质进排气 单向阀 平衡孔作了简介.

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Non - return valve ( including the end of valve ) - used to automatically prevent the backflow tube medium.

止回阀 ( 包括底阀 ) — 用于自动防止管道内的介质倒流.

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Water pumps at the end of the relevant type of valve is also a non - return valve.

水泵吸水关的底阀也属于止回阀类.

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Single drainage pumps have the potential intrusion should set up a non - return valve.

单台水泵排水有可能发生倒灌时,应设止回阀.

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