anode arc root 阳极弧根
cathode arc root 阴极弧根
arc root position 电弧弧根位置
Diffusive arc root 扩散型弧根
arc-root attachment 弧根贴附
argon arc root welding 氩弧焊打底
manual arc root welding 手工电弧焊打底
results manual arc root welding 手工电弧焊打底
It was found that the gas temperatures at arc root and arc tip are equal and they decrease with the argon flow rate increasing.
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。
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.
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。
The results show that the number of OH radicals decreases rapidly and the number of o atoms follows a rule of increasing firstly and then decreasing from arc root to arc tip.
结果表明：沿等离子体从弧根到弧梢位置，OH自由基数量迅速减少，O原子数量呈现先增多后减少的规律。
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