On the basis of the tests as well as experiments, the best break-in times of transmission gear with a low amplitude load were found, and the rule of lengthening the fatigue life of these gears with different times of breaking-in was summarized.

• 在试验的基础上，给出该变速箱齿轮低载强化的最佳磨合次数，并总结出该齿轮在交变载荷下不同磨合次数的疲劳寿命增长规律。