osculating block

例句：

1. 1. The engine needs to be checked for any osculating block issues.
   发动机需要检查是否有节流阀块问题。
2. 2.The technician replaced the faulty osculating block with a new one.
   技术人员用一个新的节流阀块替换了故障的部件。
3. 3. The engineer found that the osculating block was causing excessive wear on the piston rings.
   工程师发现节流阀块导致活塞环过度磨损。