steam pipe union

例句：

1. 1.The steam pipe union connects the boiler to the furnace.
   蒸汽管接头将锅炉与炉子连接起来。
2. 2. The engineer inspected the steam pipe union for any leaks.
   工程师检查了蒸汽管接头是否有泄漏。
3. 3.The steam pipe union is essential for maintaining proper water pressure in the system.
   蒸汽管接头对于保持系统中适当的水压至关重要。