Computational results show that the axial gas flow play the main role on the arc stability.
计算结果表明，轴向气流对电弧稳定性起重要作用。
However the welding arc may be extincted and ignited periodically. So the arc stability becomes the key.
该电源电弧容易引起周期性的熄灭和引燃，因此如何保证电弧稳定燃烧成为关键。
Also, the distribution of the oxide has the considerable impact on arc starting as well as arc stability.
氧化物的分布对起弧、电弧稳定性等均有重要影响。
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