flume flow meter

例句：

1. 1. The engineer used a flume flow meter to measure the water level in the river.
   工程师使用堰流计测量河流中的水位。
2. 2. The flume flow meter was an essential tool for the surveyor.
   堰流计是测量员必不可少的工具。
3. 3. The flume flow meter helped the scientist to understand the flow of water in the river.
   堰流计帮助科学家理解了河流中水流的情况。