underflow gate

例句：

1. 1. The underflow gate is designed to prevent water fromflowing back into the system during maintenance.
   下溢门的设计是为了在维护期间防止水回流到系统中。
2. 2. The underflow gate iscrucial for maintaining the integrity of the pipelinesystem.
   下溢门对于保持管道系统的完整性至关重要。
3. 3. The underflow gate was installed toimprove the efficiency of the wastewater treatmentplant.
   下溢门的安装是为了提高废水处理厂的效率。