它能提供多种高性能的焊接模式，如恒压埋弧焊、恒流埋弧焊、气保焊、碳弧气刨。
It can provide several high performance welding modes, such as constant-voltage submerged arc welding, constant-current submerged arc welding, gas shielded welding and carbon arc air gouging.
本研究还根据CO2双丝焊接的特点设计了恒压外特性，并确定了软件PI控制算法。
Constant voltage characteristic was also designed according to the character of CO2 twin-wire welding process, and software PI control arithmetic was confirmed.
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