steam valve gland

例句：

1. 1.The steam valve was replaced after the old one failed.
   蒸汽阀门在旧的坏了之后被更换了。
2. 2. The engineer carefully inspected the steam valve to ensure it was working properly.
   工程师仔细检查蒸汽阀门，确保它正常工作。
3. 3.The steam valve is an essential part of the heating system, ensuring proper flow of steam.
   蒸汽阀门是供暖系统的一个关键部分，确保蒸汽的适当流动。