单词negative polarity
un.: 负极性网络: 负极标识;负极性剖面;负极性的
负极性
The two characters of gun are decided by the condition of negative polarity weak plasma arc"s burning.
该枪体的这两个特征是由反极性弱等离子弧的两个相应的稳定燃烧条件所决定的。