plunger connecting rod

例句：

1. 1.The engine needs to be checked for any signs of wear on the plunger connecting rod.
   发动机需要检查活塞连杆是否有磨损的迹象。
2. 2.The engineers were tasked with repairing the damaged plunger connecting rod.
   工程师们被指派修理损坏的活塞连杆。
3. 3. The new design uses a lighter material to reduce the weight of the plunger connecting rod, making it more efficient.
   新设计使用较轻的材料来减轻活塞连杆的重量，使其更加高效。