
Trapezoidal sheeting in building; trapezoidal steel sheeting; determination of loadbearing capacity by testing
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Trapezoidal sheeting in building; trapezoidal steel sheeting; determination of loadbearing capacity by testing
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻