“磨合”是一个机械学词语,指新的机械或刚经大修的汽车(机器)在其运行初期,各摩擦零件的接触面上的加工痕迹磨光和配合形状密合的过程。在许多年之前,“磨合”这个词恐怕只有专门从事机械、汽车制造、修理的人才会用到,外行是很少熟悉它的。如今,“磨合”却已经走 “Run-in” is a mechanical term used to refer to the process by which the new machine or just overhauled car (machine), at the beginning of its operation, grind and match the machining marks on the contact surfaces of the friction parts. Many years ago, the word “run-in” was probably only used by people who specialized in machinery, automobile manufacturing and repair, and the laymen were seldom familiar with it. Today, “running in” has gone