
Geotechnical investigation and testing - Identification, description and classification of rock (ISO 14689:2017); German version EN ISO 14689:2018
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
ISO 14689 : 2017 - Identical
EN ISO 14689 : 2018 - Identical
EN ISO 14689 : 2018 - Identical