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rotary
人气:209 ℃ 时间:2020-07-18 15:27:22
解答
rotary hook
大钩;
旋转式梭仔;
旋转钩
The ideal lower tension can now be achieved as a result of improvements in thethread take -up ,rotary hook and feed mechanisms.
通过对挑线杆旋梭送料机构的合理改良,可在降低张力的条件下获得理想满意的缝纫效果.
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