Hits:
Title:一种含金属网背板的高应力软岩巷道支护体系及施工方法
Type of Patent:发明
Application Number:201510159243.4
Number of Inventors:40
Service Invention or Not:No
Application Date:2015-04-03
Publication Date:2017-03-29
Authorization Date:2015-04-03
Release Time:2018-12-06