point density

Point density distribution can be varied with the change of surface curvature and surface topology information is effectively reflected. Then, error evaluation method on surface is studied.

该方法使测点能够随曲面曲率变化进行疏密分布，有效的反映曲面的拓扑信息。其次，对复杂曲面的误差评定方法进行了研究。

When ground point density is high and distributed evenly, topography can be presented with high fidelity.

地面点密度高且分布均匀时, 较能正确地展示地形面.

Some collective fluctuations of physical quantities are calculated in this paper. The second moments of electromagnetic field fluctuations, Coulomb field and representative point density fluctuations in phase space are given.

计算了等离子体物理量的集体涨落：电场涨落、磁场涨落、库仑电场涨落引起的相空间代表点密度涨落量的二级矩。

Mathematical models for continuity check, probe path check, adding lead-ins and point density and cutter direction adjustment are established respectively by analyzing the requirements for every steps of pre-proccessing to achieve, also the algorithm flow charts are given.

通过分析磨削加工前处理各个步骤所要达到的目标要求，分别建立了连续性检查、探针路径检查、添加引入线、点密度调整以及刀具方向调整的数学模型并给出了算法流程图。