tightness test of steam stop valve

例句：

1. 1.The engineer conducted a tightness test of the steam stop valve to ensure its proper functioning.
   工程师对蒸汽截止阀进行了密封性测试，以确保其正常工作。
2. 2.During the maintenance, the technician performed a tightness test of the steam stop valve to detect any potential issues.
   在维护过程中，技术人员对蒸汽截止阀进行了密封性测试，以检测任何潜在问题。
3. 3. The tightness test of the steam stop valve is crucial for maintaining the integrity of the system.
   蒸汽截止阀的密封性测试对于保持系统完整性至关重要。