... soft nitriding 软氮化（法） soft seated valve 软座阀 soft shock 柔性冲击 ...
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soft-seated valve 软座阀
Soft seated Butterfly Valve 进口软密封蝶阀
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Control supply line water pressure. install a soft seated spring loaded check valve upstream of the assembly.
控制供应管道的水压。在总成的上游安装一个软阀座，弹簧负载止回阀。
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