流水速力测定

例句：

1. 1. The river's flow rate is measured in cubic meters per second.
   河流的流速以每秒立方米为单位测量。
2. 2.The engineer used a flow rate calculator to estimate the amount of water needed for the project.
   工程师使用流量计算器估算了项目所需的水量。
3. 3. The scientist observed that the flow rate increased as the water level dropped.
   科学家观察到随着水位下降，流量速率增加。