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Ultrasonic seam welding technologies of 
copper plate and tube for collecting solar energy
TANGYong(汤勇),WANZhen-ping(万珍平), LIUYa-jun(刘亚俊),LIUShu-dao(刘树道)
Ultrasonic seam welding technologies of 
copper plate and tube for collecting solar energy
TANGYong(汤勇),WANZhen-ping(万珍平), LIUYa-jun(刘亚俊),LIUShu-dao(刘树道)
中国有色金属学报(英文版) . 2003, (02): 402 -406 .