steam stop valve

例句：

1. 1.The steam stop valve is used to preventthe flow of steam from the boiler.
   蒸汽截止阀用于防止锅炉中蒸汽的流动。
2. 2. The steam stop valve is essential formaintaining the proper pressure in the system.
   蒸汽截止阀对于保持系统内适当的压力至关重要。
3. 3. The steam stop valve is designed toshut off the flow of steam when itreaches a certain temperature.
   蒸汽截止阀设计成在达到一定温度时关闭蒸汽的流动。