standard submerged orifice

例句：

1. 1. The standard submerged orifice is used to control the flow of water.
   标准淹没孔用于控制水流。
2. 2. The engineer designed the standard submerged orifice to ensure efficient water distribution.
   工程师设计了标准淹没孔以确保高效的水分配。
3. 3. The standard submerged orifice was installed in the pipeline to prevent leaks.
   标准淹没孔被安装在管道中以防止泄漏。