adj.正字法的；拼字正确的；垂直的；直角的；正射的
=orthographical.
This type of orthographic normalization is not supported. 这种拼字规范化不受支持。
It is easy to see how orthographic projection works if you imagine that the object is inside a glass box. 如果想像物体是在玻璃盒子里，你会很容易理解正投影的原理。
