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一种保水采煤矿井/矿区等级划分方法

Release time:2020-10-30 Hits:

Affilication of Author(s):资源与地球科学学院
Disigner of the Invention:王启庆,范开放,刘士亮
Type of Patent:国内
State of Patent:专利授权
Application Number:201810090301.6
Number of Inventors:4
Service Invention or Not:no
Application Date:2018-01-30
Authorization Date:2019-06-28
First Author:liwenping