tube seam

例句：

1. 1. The engineer carefully examined the tube seam to ensure it was secure.
   工程师仔细检查管子连接处以确保其牢固。
2. 2.The new model car has a sleek tube seam that makes it look more stylish.
   新款汽车有一个光滑的管缝，使其看起来更时尚。
3. 3. The construction workers had to repair the tube seam where the wall started to sag.
   建筑工人不得不修补墙壁开始塌陷处的管缝。