A geometric error model for CNC lathe and the measured data are presented in this paper.
本文给出了数控车床的几何误差模型和一台数控车床的实测数据。
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.
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。
This paper discussed in detail algorithm of geometric rectification by scanned topographic map based on teaching model with least squares method to heighten image quality and data accuracy.
针对扫描矢量化这一数据采集手段，以提高图像质量、数据精度为目的，以教学模型为基础，利用最小二乘原理，详细讨论了扫描后的地形图几何纠正算法。
It USES FDG as data model, cell-based model as geometric model, and view model as user interface, but it is more complex than the former system based on parameter and history.
它在底层采用特征依赖图保存数据模型，中层用细胞元模型作几何模型，在用户层用视图模型表示。
It USES feature dependent graph as data model, cell-based model as geometric model, and view model as user interface, but it is more complex than the former system based on parameter and history.
在底层它用特征依赖图作为数据模型，在中层用细胞元模型作几何模型，在用户层用视图模型表示。
A new strategy of constructing and managing the parametric model is used in used in this method. It extends usual graphics data structure to describe geometric constraint.
该方法引入了建立和管理参数化模型的策略，通过扩展一般的图形数据结构统一表示几何约束。
This paper took discal cam as an example to bring forward a method of using computer program to get 3D geometric data of planar part and make its model in reverse.
以盘形凸轮为例，提出一种用计算机编程实现平面零件实物三维几何数据获取以及模型反求的方法。
Using the tree method partitions the unordered point data, so the geometric model of the scattered data is generated.
并通过树形的空间结构完成对密集散乱点群空间分割，由此实现对散乱点群数据的几何分割。
A new data representation method called direction quantization representation is presented by simulating a simplified geometric model of biological compound eye.
基于对生物复眼几何结构的模拟，提出一类新颖而有效的数据处理方法——方向量子化方法。
According to the dimensions and the material data of the pipe, the researchers can create the three dimensional FEM model and get the appropriate geometric parameters of the die after compute.
研究者只要根据管材尺寸、物料基本性能数据，按照该范式建立三维模型通过计算便能设计出该种机头合理的结构参数。
Then, the data were input into rapid prototyping machine AFS 320QZ to make three dimensional geometric model.
将处理后的数据输入AFS-32 0QZ激光快速成型机制造三维头颅模型。
In order to obtain a residual error map for remote sensing data after geometric correction, a GCP error propagation model was proposed.
为了获取遥感影像几何纠正误差空间分布情况，提出一种纠正控制点误差传播模型。
In order to obtain a residual error map for remote sensing data after geometric correction, a GCP error propagation model was proposed.
为了获取遥感影像几何纠正误差空间分布情况，提出一种纠正控制点误差传播模型。
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