Change the oil in the rotary gear box (transmission).
更换转盘变速箱机油。
It contains an oil gear box which reduces abrasion to the machine during the operation, thus prolonging the life span of the machine, enhancing the utilization ratio of the machine.
含有油齿轮箱，使机器运转减少磨损，延长机器使用寿命，提高了机器的利用率。
The problems such as noise, abnormal sound, heat and lubricating oil leakage of front gear box of DF 8b locomotive are analyzed in detail.
对东风8 B型机车前变速箱存在的噪音、异音、发热和机油泄漏等问题，进行了详尽的分析。
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