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发明名称
METHOD OF FREEZING ROCK FOR ERECTING UNDERGROUND STRUCTURE
摘要
申请公布号
SU1507976(A1)
申请公布日期
1989.09.15
申请号
SU19874225474
申请日期
1987.04.07
申请人
KH POLT I IM.V.I.LENINA
发明人
KLIMENTOVA OLGA M,SU;MATVEEV ALEKSANDR S,SU;KLIMENTOV MIKHAIL N,SU
分类号
E21D1/12
主分类号
E21D1/12
代理机构
代理人
主权项
地址
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