The knife blade angle is small, when cutting labor. The axe blade angle is larger. Used to cut bones and other objects, not easy to blunt. The two blade with a knife, a double-edged knife"."

现有菜刀的刀刃角度较小，切菜时省力。斧头的刀刃角度较大。用来砍骨头等物时，不容易钝。