The devices fall into two categories: optical see-through and video see-through.
The devices fall into two categories: optical see-through and video see-through.
这种装置可分为两大类：光学式透视以及视讯式透视。
The devices fall into two categories: optical see-through and video see-through.
这种装置可分为两大类：光学式透视以及视讯式透视。