
Drilling and foundation equipment - Safety Part 6: Jetting, grouting and injection equipment
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Drilling and foundation equipment - Safety Part 6: Jetting, grouting and injection equipment
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻