flow box

例句：

1. 1. The engineer designed a flow box to improve the efficiency of the pump.
   工程师设计了一个流槽来提高泵的效率。
2. 2.The construction crew had to remove the old flow box and replace it with a new one.
   施工队不得不拆除旧的流槽，并换上新的。
3. 3.The flow box was installed in the pipeline to prevent water from flowing backwards.
   在管道中安装了流槽以防止水流反向。