名词
中文翻译：主轴承螺母
同义词：
['Main bearing', 'Main bearing bolt', 'Main bearing nut']
例句：
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1. The mainbearing nut needs to be replaced regularly to ensure the smooth operation of the machine.
为了确保机器的平稳运行，需要定期更换主轴承螺母。
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2. During maintenance, the technicians carefully removed the main bearing nut and inspected the bearing for any signs of wear.
在维护过程中，技术人员小心翼翼地拆下主轴承螺母，检查轴承是否有磨损的迹象。
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3. The old main bearing nut was worn out, causing the machine to overheat and stop working.
旧的主轴承螺母磨损严重，导致机器过热并停止工作。