今天看了下谷歌热榜，看到宝逗性播网排名第一，但谷歌搜索下，确没什么内容，不知道是怎么做起来的，有开发者_C百科没有牛人赐教下！
I\'m trying to convert an excel for开发者_运维问答mula that I found to a more easily understood formula.Below is the formula I\'m trying to interpret.What is ei??
加载中,请稍侯......