名词
中文翻译：凹面滑块
同义词：
['concave slide', 'concave surface slide']
例句：
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1.The engineer designed a concave slide to improve the efficiency of the machine.
工程师设计了一个凹面滑块来提高机器的效率。
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2.The concave slide is used in the manufacturing process to smooth the surface.
凹面滑块用于制造过程中，以平滑表面。
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3. The concave slide was installed on the machine to facilitate the movement of the parts.
凹面滑块安装在机器上，以便于部件的移动。