annular crack

例句：

1. 1. The car's engine was severely damaged due to the annular crack in the piston.
   由于活塞上的环形裂纹，汽车的发动机严重受损。
2. 2.The structural integrity of the bridge was compromised by the annular crack that developed during the construction.
   在建设过程中形成的环形裂纹破坏了桥梁的结构完整性。
3. 3. The engineer inspected the annular crack and determined that it needed immediate repair to prevent further damage.
   工程师检查了环形裂纹并确定需要立即修理以防止进一步损坏。