情境模型理论认为人们在理解信息的过程中至少需要建构5个维度，即：（1）空间，（2）时间，（3）实体，（4）因果，（5）目的等。
The theory of SM believes that the representation of SM concerns at least five dimensions, such as (1) space, (2) time, (3) entity, (4) causality and (5) intention.
对于模型空间中的任何形状的实体都可以由八叉树法分割的立方体序列来表示。
The entities of any shape for model space can all be denoted by intersected cube sequence by octrees.
由于其海量和非结构化等特征，实体对象层次模型、群集多服务器体系被提出用以集成并实施高效的空间数据管理。
Because it's massive and unstructured, Feature-Oriented Object Level (FOOL) and Multi-servers cluster system are used to integrate and manage spatial data effectively.
时间标记在实体和元组级上，空间数据采用非拓扑数据模型。
Finally, the time is signed on entity and record, and non-topological data model is adopted to organize spatial data.
介绍了以拓扑关系数据为基础的GIS空间点、线、面对象实体模型，给出了基于对象实体模型的自动拓扑关系模型。
This paper introduces the GIS space point? Line? Surface entity model based on topology data and the automatic topology model which is based on the objects model.
在时空数据库中，地理实体模型包括地理对象空间信息和时态信息。
In spatiotemporal database, geographic entity model includes spatial and temporal information of geographic object.
空间数据模型是关于现实世界中空间实体及其相互间联系的概念。
Spatial data model is based on the principle of spatial entities and relationship between mutual.
科学客观的空间线状实体误差模型精度评判指标。
V. Scientific indexes for precision evaluation of linear entity.
面向对象的地理信息模型以地理空间实体为对象，地理实体可以从几何数据、符号数据、实体数据、属性数据的角度来进行数据的组织。
A geo-spatial entity which can be organized from geometric data, symbol data, entity data, attribute data is regarded as an object to the object oriented geographical information model.
以此为基础，建立采场底部存留矿石的三维实体模型，准确地获取存留矿石在采场底部的空间分布及体积大小，进而计算出存留在采空区中的矿量。
From the model, the spatial distribution and the volume of the residual ore at the bottom can be accurately obtained and the ore amount in the mined cavity can be calculated.
以此为基础，建立采场底部存留矿石的三维实体模型，准确地获取存留矿石在采场底部的空间分布及体积大小，进而计算出存留在采空区中的矿量。
From the model, the spatial distribution and the volume of the residual ore at the bottom can be accurately obtained and the ore amount in the mined cavity can be calculated.
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