• 1. a scene graph: 场景图
• 2. Building a Scene Graph: 建立一个场景图

• 1.The problem becomes more complex if your application modifies a node that is buried deep within a scene graph or selected interactively by a user.
  只有当你的程序修改一个在场景图中隐藏很深或者经由用户交互式而被选择的节点的时候，问题才会比较复杂。
  dict.yoduao.com
• 2.To remove the limitations of traditional scene graph structure in development of virtual maintenance training system(VMTS), a new scene graph structure is presented.
  针对传统场景图结构在开发虚拟维修训练系统时的局限性，提出了一种新的场景图数据结构。
  dict.yoduao.com

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