The result indicated: as to the influence on seam smoothness of worsted fabric of medium weight, the tension of sewing thread > sewing thread> the size of sewing needle> stitch density.

• 研究结果表明：对于中厚型毛精纺面料，缝纫线张力对缝纫平整度的影响最大，缝纫线种类对缝纫平整度的影响较大，机针号对缝纫平整度有一定的影响，线迹密度对缝纫平整度的影响不显著。