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mechanical机械层 keepoutlayer禁止布线层 topoverlay顶层丝印层 bottomoverlay底层丝印层 toppaste,顶层焊盘层 bottompaste底层焊盘层 topsolder顶层阻焊层 bottomsolder底层阻焊层 drillguide,过孔引导层 drilldrawing过孔钻孔层 multilayer多层 机械层是定义整个P...