Lightning is the furious phenomena in atmosphere, and has vigoroso randomicity.

雷电是发生在大气中激现象,具有极强随机性。

ESRI company is standard of GIS software domain, which product – ArcEngine not only be provided with vigoroso expansibility, but also With limitless expansibility.

ESRI公作为GIS软件产业行业标，组件ArcEngine具有强大扩展性，而且这种扩展是不受任何限制。