【Unity加载二进制数据】
The first step is to save your binary data file with the ".bytes" extension. unity will treat this file as a TextAsset. As a TextAsset the file can be included when you build your AssetBundle. Once you have downloaded the AssetBundle in your application and loaded the TextAsset object, you can use the .bytes property of the TextAsset to retrieve your binary data.
参考：http://www.unitymanual.com/thread-2037-1-1.html