prolonging the span of life
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prolonging the span of life
延长寿命
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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。
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