虽然新车的发动机在出厂前都经过了“冷磨合”，但这种磨合仍是不能够替代实际运用时的磨合。

Although the engine of the new car before the factory has gone through the cold run, but this is still not running in place to replace the actual running.

youdao

强调了齿面硬度、面粗糙度、滑情况、用前磨合情况等对齿轮接触强度的影响。

It also expounds influences of hardness and roughness of teeth surface, lubrication, running-in before use on touch strength of gear.

youdao

典型情况下这会在刹车系统的前10到50次制动过程中发生并被称作碟盘和刹车片的“磨合”。

This typically happens during the first 10-50 stops of a brake system and is referred to as "burnishing" the rotor and pads.

youdao