With gas flow rate increasing, the vibrationaltemperature 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。
2
The vibrational frequencies are usually high, so that you're not in the high temperature limit.
的振动频率一般比较高，所以通常我们都不能用高温极限。
3
In other words, all the molecules, in many cases, are basically all of them are in the ground vibrational state at room temperature.