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零件插脚,如图1所示。■该零件尺寸大小，工艺性较差，有比材料厚度窄的长槽，有要求步距高的倒角，并且
Parts pin, shown in Figure 1. ■ The size of the parts, poor workmanship, with a narrower than the material thickness of the slot, chamfering requires high step, and