helical curve
短语词组
- helical curve cutter 螺旋刃刀具
- helical curve cutters 螺旋刃刀具
- equal changeable column helical curve 均变圆柱螺旋线
- concrete -Mixer drum helical curve 搅拌罐螺旋线
- non -equiangular logarithm helical curve 非等角对数螺旋线
- helical coil steam generator curve 螺旋曲线 返回 helical curve