restricted orifice

• 限流孔

restricted orifice的用法和样例：

例句

1. Restriction orifice plates are suitable for all pipe sizes and shall meet the same requirements as flow measurement orifices unless otherwise noted.
   限流孔板适合所有管道尺寸并且应满足和流量测量孔板同样的要求，除非另有注释。