名词
中文翻译：球头
同义词：
['ball head', 'ball shank']
例句：
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1.The engineer used a ball swage to shape the metal into a cylinder.
工程师使用球头模将金属加工成圆柱形。
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2. The ball swage was used to remove the burrs from the surface of the workpiece.
球头模被用来去除工件表面的毛刺。
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3.The ball swage was then used to drill holes in the workpiece.
然后球头模被用来在工件上钻孔。