Technical innovation and green construction of steel structure 并列题名:Technical innovation and green construction of steel structure Theoretical innovation and practice on construction of the CPC Practical and innovative technologices for welding of steel structures 并列题名:Theoretical innovation and practice on construction of the CPC Technical innovation of quality and safety control in tunnel construction Study on self-innovation and the upgrading of industrial structure 并列题名:Practical and innovative technologices for welding of steel structures technological innovation and the effect of the employment on the eu countries / Design and application of steel structures