double check valve的用法和樣例：
例句
- DOUBLE CHECK VALVE ASSEMBLY For Low Hazard Cross-connections and continuous pressure applications.
雙止回閥總成用於低危險交叉連接和持續壓力應用場合。 - A Double Check Detector Assembly shall be installed on fire protection systems when connected to a potable water supply.
當消防系統連接到飲用水供應系統時，應該安裝一個雙止回閥總成。
