automatic coil thread roller 自动搓丝机

automatic thread roller 自动滚丝机

automatic c coil thread roller 自动搓丝机

roller snap thread gage 滚柱螺纹卡规 ; 滚柱螺纹规

thread guide roller 导纱辊

track roller thread surface 履带支重轮螺纹表面

Thread take-up lever roller 挑线杆滚柱

roller-type thread 滚柱式螺纹