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算出利用就只是其中的一步，还要算钻孔费，看看有多少个孔，最小的孔多大，一张大板有多少个孔，还要根据板子里的走线来算出电镀铜的成本等每个小工艺的成本，最后加上每个公司平均的人工费，损耗率，利润率，营销费用，最后把这个总的费用除以一大块�

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