如图所示,零件材料为45号钢,大批量生产,硬度hrc30 35,请从以下abcd四种工艺路线中选择一种零件合理的机械加工工艺路线。 工艺路线 Template




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tomski如图所示,零件材料为45号钢,大批量生产,硬度hrc30 35,请从以下abcd四种工艺路线中选择一种零件合理的机械加工工艺路线。 工艺路线 coloring