Wangyong He
Click:
The Last Update Time:..
Patents
一种用于PDC锚杆钻头的自动焊接工作台
2021-04-30 Hits:
First Author:何王勇
Authorization Date:2016-06-15
Authorization number:ZL 201410850841.1
Service Invention or Not:no
Copyright © China University of Geosciences, Wuhan