object geometry造句

In the thesis , compatible data storage fashion and data structure for a large - scale 3d scene is discussed firstly . then the process technique for dem , spatial object geometry data , texture image data and scene metadata are discussed in turn . finally , a new nested index , scene pyramid + sub scene regular dividing quad - tree is brought forward , which consumes less memory and reduces the complexity of spatial data query
本文首先确定了适用于大规模三维场景可视化的数据结构和存储方式；然后分别针对dem数据、地物模型数据、纹理影像数据及场景元数据论述了分割与lod处理的方法；最后给出场景金字塔与子场景规则分割四叉树两套索引的建立以及具体应用策略，该索引机制减少了内存消耗，降低了数据查找的复杂性。
It's difficult to find object geometry in a sentence. 用object geometry造句挺难的