seal of tube

例句：

1. 1. The seal of the tube isessential for the proper functioning of thedevice.
   管的密封对于设备的正确运行至关重要。
2. 2.The seal of the tube was damaged duringtransportation, causing leakage.
   运输过程中管的密封损坏，导致泄漏。
3. 3. The engineer carefullyinspected the seal of the tube toensure its integrity.
   工程师仔细检查了管的密封，以确保其完整性。