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Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations?keyword=Method for characterisation of rock strata in drilling operations 专利,更快更准确