spiral fluted roller

roller的翻译中... ... spiral roller 螺柱滚子, 螺旋滚柱 spiral fluted roller 螺槽辊 spirrollerly grooved roller 螺旋槽纹辊 ...

直角三角... ... "螺旋扩张器"," spiral expander" "螺旋槽滚子"," spiral fluted roller" "螺旋槽螺丝攻"," spiral fluted tap" ...