back siphonage
常见例句
- Series 957, 957N, 957Z are normally used in health hazard applications for protection against back siphonage or backpressure.
系列957，957N，957Z通常用于健康危害应用场合，防止反虹吸或反压力所带来的危害。 - Drains should be of adequate size and should be provided with an air break or a suitable device to prevent back-siphonage, when appropriate.
排水沟应有足够的大小，应根据适当的情况，提供空气短路器或合适的设备以防止反吸。
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