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生产批量较大时,为了便于更换磨损的钻套,应使用()钻套。当对同孔需进行多工步加工时(

题型:填空题

题目:

生产批量较大时,为了便于更换磨损的钻套,应使用()钻套。当对同孔需进行多工步加工时(如钻孔、铰孔),应使用()钻套。

答案:

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