Screw: In machine construction, a usually circular cylindrical member with a continuous spiral rib or thread, used either as a fastener or as a force and motion modifier.
螺纹件：机器结构中带连续螺旋肋的圆柱形件，用作紧固件或力和运动变换装置。
This machine with heavy cylindrical shuttle hook is designed for processing extreme thread and material, such as the manufacture of leather goods, special textile and decoration industry.
重型筒形摆梭缝纫机主要用于处理一些使用特殊缝线和面料，如皮件，特殊纺织品的制造及装潢业等应用领域。
This machine with heavy cylindrical shuttle hook is designed for processing extreme thread and material, such as the manufacture of leather goods, special textile and decoration industry.
重型筒形摆梭缝纫机主要用于处理一些使用特殊缝线和面料，如皮件，特殊纺织品的制造及装潢业等应用领域。
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