
Geotechnical investigation and testing – Identification, description and classification of rock (ISO 14689:2017)
出版:Osterreichisches Normungsinstitut/Austrian Standards

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