名词
中文翻译：摩擦辊
同义词：
['friction wheel', 'rubbing roll']
例句：
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1. The friction roll is used to reducethe wear on the machine.
摩擦辊用于减少机器的磨损。
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2. The friction roll isessential for smooth operation of the machine.
摩擦辊对于机器的平稳运行至关重要。
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3. Thefriction roll was replaced after a few monthsof use.
经过几个月的使用后，摩擦辊被更换了。