放电电极长度的增加有利于脱硫，但应与功率匹配；
It becomes higher as humidity, power and length of discharge electrode (Le)increase;
可以做实验使用不同长度的铜线来当电极。
Experiment with different lengths and configurations of electrodes.
一个氙弧灯，其电极之间的电弧长度大于信封内附弧的直径。
A xenon arc in which the length of the arc between electrodes is greater than the diameter of the envelope enclosing the arc.
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