flat-lock machine

... flat-lock machine 绷缝缝纫机 ; 绷缝机 flat lock sewing machine 平锁缝纫机 flat-bed lock stitch machine 平板锁缝缝纫机 ; 平式锁缝缝纫机 ...

 covering stitch sewing machine

... 包缝缝纫机 overlock sewing machine 绷缝缝纫机 covering stitch sewing machine 锁钮孔缝纫机 buttonhole sewing machine ...