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Title:隧道或坑道超前地质预报激发极化时域发射机设备
Institution:岩土与地下工程研究院
Type of Patent:Utility models
Application Number:200920227148.3
Number of Inventors:1
Service Invention or Not:No
Application Date:2009-09-22
Publication Date:2010-06-16
Authorization Date:2010-06-16
Release Time:2019-04-15