合金钢材质经热处理，研磨修边刀，刀口锋利，精密度高。

Alloy steel via heat treatment, grinding blade, enable to keep sharp edge and high precision.

youdao

合金钢材质经热处理，研磨修边刀，刀口锋利，精密度高。

Alloy steel via heat treatment, grinding blade, enable to keep sharp edge and high precision.

youdao