机构:
ITW Welding North Amer, Aluminum Technol, Appleton, WI USA
British Welding Inst TWI, Cambridge, England
British Engn Council, London, England
AWS Tech Comm, Miami, FL USA
Aluminum Assoc, Tech Advisory Comm Welding, Arlington, VA USAITW Welding North Amer, Aluminum Technol, Appleton, WI USA