AWSD1.1-D1.1M-2020钢结构焊接规范中英文HH自译.pdf,AWS D1.1 / D1.1M : 2020 AWS D1.1/D1.1M:2020 An American National Standard 美国国家标准 Structural Welding Code—Steel 钢结构焊接规范 传外得不,用使部内,件文部内司 American Welding Society
AWSD1.1-D1.1M-2020钢结构焊接规范中英文HH自译.pdf,AWS D1.1 / D1.1M : 2020 AWS D1.1/D1.1M:2020 An American National Standard 美国国家标准 Structural Welding Code—Steel 钢结构焊接规范 传外得不,用使部内,件文部内司 American Welding Society