Hits:
First Author:jiazhenyuan
Disigner of the Invention:白玉,付饶,Fuji Wang,郭会彬,钱宝伟
Authorization number:ZL 201610708214.3
Pre One:一种复合材料层合板钻削毛刺损伤的模拟方法
Next One:一种具有回勾刃的手工钻头