polyline怎么读

This paper analyzes concerned problems of drawing Roadways on the platform of AutoCAD, puts forward basic principles and methods of automatically drawing polyline Roadways, sleeking junctions, dimensioning by category etc, also implements the function of instantly drawing after inputting.

通过深入分析在AutoCAD环境下绘制巷道中存在的有关问题，提出了异构属性巷道的自动绘制、光滑对接及分类标注的基本原理及编制方法，且实现了异构属性巷道的即输即绘功能。

The two-dimension polyline set, triangle mesh and point sampled model are primary methods of geometric model representation and are widely employed to represent the vector map and three-dimension geometric model corresponsively.

二维折线集、三角网格和点是几何模型表示中的基本元素，分别被广泛用于二维矢量地图和三维物体模型的表示。

BHF, thickness difference, the mechanical properties of blank and the weld location had a great influence on the weld-line movement distance and the forming limit of the polyline weld TWB in its forming process.

结果表明，焊缝折点处的成形性能较差；压边力、板厚差、板料力学性能和焊缝位置等对折线焊缝拼焊板的冲压成形极限以及焊缝的移动量都具有很重要的影响。