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1. 针杆摆动机构 needle bar swing mechanism
2. 针杆行程 needle bar stroke
3. 针杆机构 needle bar mechanism
4. 针线 needle thread
5. 针距分辨率 needle pitch resolution
6. 针迹 needle dips
7. 针距调节装置 stitch length adjusting device
8. 针迹距 length of needle dips
9. 针迹距重现性 reproducibility of stitch length settings
10. 针送料机构 needle feeding mechanism
