Patents
一种双向静动加载的顶板关键块冒落试验装置及方法
Release time:2021-09-14
Hits:
- Type of Patent:
- 国家发明专利
- Application Number:
- CN201810367298.8
- Service Invention or Not:
- no
- Application Date:
- 2018-03-19
- First Author:
- zhuwancheng
