... 双面式衣服 reversible 双线锁缝线迹 two-thread chain stitch 双针缝纫机 two-needle sewing machine ...
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two thread chain stitch 双线包缝
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All back rise seams should be two-thread chain stitch or double row lock stitch.
所有后档缝应当用双针链式缝迹或双行锁式线迹。
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Model GK8-24 double-needle four-thread bag sewing closer adapted two paralleled double thread chain stitch with auto-cut system.
袋口热合封口机，可同时缝制两条平行的双线链式线迹，具有更佳的密封性。
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