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Title:判断钻机钻进至一定深度时钻头所处地质层的方法
Institution:土建与水利学院
Type of Patent:Invent
Application Number:201510157714.8
Number of Inventors:1
Service Invention or Not:No
Application Date:2015-04-03
Publication Date:2017-12-08
Authorization Date:2017-12-08
Release Time:2019-04-15