[化] 切断阀; 断流阀; 截止阀; 闸阀

shut-off valve的用法和样例：

例句

Install a shutoff valve in the cold water inlet line.在冷水进水管处安装一个关闭阀。
The Pacific tilting disc check valve uses gravity to rapidly close the disc upon reversal of flow.美国太平洋翻转式阀瓣止回阀在出现逆流时利用重力迅速关闭阀瓣。

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