精心设计的齿轮箱结构及成形凸轮，使卷绕成形良好；

Well-designed gear box structure and builder cam make the winding forming good;

youdao

精心设计的齿轮箱结构及成形凸轮，使卷绕成形良好；

Well-designed gear box structure and builder cam make the winding forming good;

youdao