Hits:
First Author:lingsiying
Disigner of the Invention:李军,louzhifeng,wangliding,wangxiaodong,贾颖
Authorization number:ZL201610847226.4
Pre One:一种用于直齿标准齿轮螺旋线测量装置的高精度定位装
Next One:一种大齿轮渐开线样板