You should see the double particles in the Top viewport like this. 你将在顶视图中看到两层粒子。
Next, if you could foldthe top and right-side views forward,you would have an orthographic projection showing threeviews of the object. 接下来,如果你将顶视图和右侧视图向前翻折的话,你就会得到一个能够显示该物体三视图的正交正投影。