名词
中文翻译：旋转的
同义词：
['spindle', 'spindle assembly', 'spindle bearing']
例句：
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1. The machine had a spin-on gear that made it easy to move the parts.
这台机器有一个旋转的齿轮，使得移动部件变得容易。
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2. The engineer carefully assembled the spin-on parts before starting the project.
工程师在开始项目之前仔细组装了旋转的零件。
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3. The spin-on part was designed to be easily replaced without tools.
这个旋转的零件设计成可以不用工具轻易更换。