
Hot Rolled Steel Channels - Part 1: Taper Flange Steel Channels - Dimensions, Masses And Sectional Properties
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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Hot Rolled Steel Channels - Part 1: Taper Flange Steel Channels - Dimensions, Masses And Sectional Properties
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频