helical curve
短语词组
- helical curve cutter 螺鏇刃刀具
- helical curve cutters 螺鏇刃刀具
- equal changeable column helical curve 均變圓柱螺鏇線
- concrete -Mixer drum helical curve 攪拌罐螺鏇線
- non -equiangular logarithm helical curve 非等角對數螺鏇線
- helical coil steam generator curve 螺鏇曲線 返回 helical curve