wetted cross section

例句：

1. 1. The engineer calculated the wetted cross section of the beam to determine its strength.
   工程师计算了梁的湿润截面以确定其强度。
2. 2. The wetted cross section of the pipe is crucial for determining its flow capacity.
   管道的湿润截面对于确定其流量容量至关重要。
3. 3.The wetted cross section of the bridge was measured to ensure it could withstand heavy traffic.
   为了确保桥梁能够承受重交通，对桥梁的湿润截面进行了测量。