combined valve and sieve tray

例句：

1. 1. The engineer designed a combined valve and sieve tray for the industrial process.
   工程师为工业过程设计了一个组合阀和筛板托盘。
2. 2.The new design of the combined valve and sieve tray greatly improved the efficiency of the filtering process.
   新型组合阀和筛板托盘的设计大大提高了过滤过程的效率。
3. 3.The engineer used the combined valve and sieve tray to optimize the flow rate of the liquid in the system.
   工程师使用组合阀和筛板托盘来优化系统中液体的流速。