flow gaging weir

例句：

1. 1. The flow gaging weir is used to measure the water flow in the river.
   流量测流堰用于测量河流中的水流。
2. 2. The engineers designed a flow gaging weir to monitor the water level in the reservoir.
   工程师们设计了一个流量测流堰来监测水库中的水位。
3. 3. The flow gaging weir was installed at the entrance of the river to prevent floods.
   在河流入口处安装了流量测流堰以防止洪水。