Some styles are spring-actuated for immediate closure when flow stops.

有些类型止回阀配置弹簧驱动，能够在流动停止时，立即关闭阀门。

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Some styles are spring-actuated for immediate closure when flow stops.

有些类型止回阀配置弹簧驱动，能够在流动停止时，立即关闭阀门。

youdao