单排的 meaning in English

single row
singlerow
uniserial

At present , there are two kinds of homemade domestic sewing machine s feed dog , single type and double type , when we use single type , it mainly depend the logn teeth on th eleft and presser foo tbottom to fix material . do by presser foot s shape and feed dog , it s more agility and covenient to stitch all kinds of curves and camber lives . therefore , single type have priority to be used to homemade domestic sewing machine ja and jb
目前,国产家用缝纫机的送布牙有单长型和双长型两种型式.当用单长型送布牙时,主要依靠左侧单排的长与压脚板"咬住"面料.通过压脚板的形状和送布牙牙的配合,对各种弯曲或弧状线缝的缝纫,就会操作灵活和方便,因此大多数国产家用缝纫机ja型和jb型优先配用单长送布牙