principle of polarity

Especially to the stripping of SLA prototype, use the similar principle similar to solubility parameter of principle of polarity, have confirmed that corrode and destroy the organic solvent of SLA prototype, thus the difficult problem stripped after solving the chemical copper facing of SLA prototype effectively.

特别是针对SLA原型的剥离，运用极性相似原则和溶解度参数相近原则，确定了有效腐蚀和破坏SLA原型的有机溶剂，从而解决了SLA原型化学镀铜后剥离的难题。

Based on the principle that the fault line's phase of transient capacity current are different from normal line's, the fault-line will be found out by contrasting polarity of each line's wavelet packet decomposition coefficient in all characteristic bands.

然后根据故障线路暂态电容电流的极性与非故障线路不同的原理，通过比较各线路暂态零序电流在所确定的频段下的小波包分解结果的极性来实现故障选线。