• 实用新型提供了曲折双针缝纫机属于机械技术领域

    The utility model provides a curve two-needle sewing machine, which belongs to the technical field of machinery.

    youdao

  • 实用新型提供了曲折双针缝纫机属于机械技术领域

    The utility model provides a curve two-needle sewing machine, which belongs to the technical field of machinery.

    youdao

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