back water hammer

例句：

1. 1. The pump was designed tohandle the back water hammer during heavy rainfall.
   这个泵被设计用来在大雨期间处理回水锤。
2. 2. During construction, the workershad to deal with the back water hammercaused by the excavation.
   施工过程中，工人们不得不处理由挖掘引起的回水锤问题。
3. 3. The engineers were concernedabout the potential back water hammer that couldoccur during the project.
   工程师们担心项目期间可能出现的回水锤问题。