名词
中文翻译：球衬套
同义词：
['ball bearing', 'ball joint', 'ball nut']
例句：
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1.The engineers used a special ball bushing to replace the old one.
工程师们使用一种特殊的球衬套来替换旧的。
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2. The ball bushing was designed to reduce friction between the two moving parts.
这个球衬套的设计是为了减少两个移动部件之间的摩擦。
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3. The ball bushing is essential for maintaining the smooth operation of the machine.
球衬套对于保持机器平滑运行至关重要。