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本文分析了高功率ＣＯ＿２激光焊接等离子体的形成机理，系统地总结了等离子体的控制方法，讨论了辅助气体对等离子体的作用。
In this paper, the formation mechanism of high-power CO 2 laser welding plasma is analyzed. The plasma control method is systematically summarized. The effect of the auxiliary gas on the plasma is also discussed.