Many bronze valves offer a Y-pattern body with an angle seat forimproved performance.

许多青铜阀门为了改进性能，采用角式阀座的Y形阀体。

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Many bronze valves offer a Y-pattern body with an angle seat forimproved performance.

许多青铜阀门为了改进性能，采用角式阀座的Y形阀体。

youdao