整修气缸需要12～20小时（时间长短取决于发动机的类型），这包括调配和安装新活塞、活塞环、活塞销和连杆。

Refinishing cylinders requires 12 to 20 hours (according to the type of engine). This includes fitting and installing new pistons, rings, piston pins, and connection rods.

youdao

整修气缸需要12～20小时（时间长短取决于发动机的类型），这包括调配和安装新活塞、活塞环、活塞销和连杆。

Refinishing cylinders requires 12 to 20 hours (according to the type of engine). This includes fitting and installing new pistons, rings, piston pins, and connection rods.

youdao