实验发现弧根和弧梢处的气体温度相等，并随着气体流量的增大而下降。
It was found that the gas temperatures at arc root and arc tip are equal and they decrease with the argon flow rate increasing.
电弧弧根不应接触绝缘子表面，但允许电弧通道的中间部分可以擦过绝缘子。
The roots of the arc must not be allowed to come into contact with insulator surface, whereas the middle of the arc channel can do so.
随着气体流量的增大，弧梢处与弧根处的振动温度均下降，但弧梢处下降速率较快。
With gas flow rate increasing, the vibrational temperature at both tip and root decreases, but the decreasing rate at arc tip is faster than that at arc root.
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