Employed semi-rotary large shuttle and hook to increase sewingefficiency.
采用半回转式大月眉与大梭心，提高车缝效率。
2
While traditional electrical mechanical sewing machines can sew a different sewing track, but need highly experienced craftsmen, efficiency is not high.
传统的电动机械式缝纫机虽然也可缝制出各式花样，但是需要经验非常丰富的技工，效率也不高。
3
This has improved the sewing quality of various filter bags, enhanced the efficiency and made the operation easier.