back siphonage
常見例句
- Series 957, 957N, 957Z are normally used in health hazard applications for protection against back siphonage or backpressure.
系列957，957N，957Z通常用于健康危害應用場合，防止反虹吸或反壓力所帶來的危害。 - Drains should be of adequate size and should be provided with an air break or a suitable device to prevent back-siphonage, when appropriate.
排水溝應有足夠的大小，應根據(jù)適當?shù)那闆r，提供空氣短路器或合適的設備以防止反吸。
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