self closing valve造句

例句与造句

1. Shipbuilding - self closing valves for oil level gauges
   造船.油位表用自闭阀
2. Shipbuilding - tube glass type level gauges with self closing valves
   造船.带自锁阀门的管道玻璃类型液位表
3. It's difficult to find self closing valve in a sentence. 用self closing valve造句挺难的