Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
牛元帅下载（永久链接:SE8.TV）牛元帅下载_牛元帅下载_牛元帅下载_牛元帅下载_牛元帅下载牛元帅下载_牛元帅下载_牛元帅下载_pAbpbS9H
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
