一、实体结构与成本结构简析 工业缝纫机由缝纫机架、离合器电机和缝纫机头三大部件组成。这三个部件均可作为商品单独经销。我厂生产的工业缝纫机架是国内传统的四腿架,由机架、台板、线车、线架、靠脚、踏板等部件组成。 First, the physical structure and cost structure Analysis Industrial sewing machine consists of three parts: sewing frame, clutch motor and sewing head. All three parts can be sold separately as commodities. The industrial sewing rack produced by our factory is a traditional four-leg rack made up of racks, platens, line carts, wire racks, feet, and pedals.