名词
中文翻译：自润滑下轨道滚轮
同义词：
['self-lubricating wheel', 'self-lubricating bearing']
例句：
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1. Thenew self-lubricating lower track roller has greatly improved the efficiency of the conveyor system.
新型自润滑下轨道滚轮大大提高了输送系统的工作效率。
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2.In order to maintain the smooth operation of the machine, it is necessary to regularly lubricate the self-lubricating lower track rollers.
为了保持机器的平稳运行，定期润滑自润滑下轨道滚轮是必要的。
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3. The self-lubricating lower track rollers are designed to reduce wear and extend the life of the machinery.
自润滑下轨道滚轮的设计旨在减少磨损并延长机械设备的使用寿命。