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Study and developing trend of inverter welding machine
lu wei 1; li zhi zhong 2; ma xin guo 3 (1 taiyuan electric welding machine works; taiyuan 030002; china; 2 taiyuan heavy machinery institute; taiyuan 030024; china; 3 shanxi design and research inst of mech and elec engineering; taiyuan 030009; chi
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