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巷道支护试验用相似模拟模型的制备方法
Release time:2020-10-30  Hits:

Type of Patent:国内
State of Patent:专利授权
Application Number:201310543404.0
Number of Inventors:1
Service Invention or Not:no
Application Date:2013-11-06
Authorization Date:2015-09-30
First Author:gongsiyuan