
GEOTECHNICAL INVESTIGATION AND TESTING - IDENTIFICATION AND CLASSIFICATION OF ROCK - PART 1: IDENTIFICATION AND DESCRIPTION
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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GEOTECHNICAL INVESTIGATION AND TESTING - IDENTIFICATION AND CLASSIFICATION OF ROCK - PART 1: IDENTIFICATION AND DESCRIPTION
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻