Here the threedimensionalentity boundary is boundary surface mesh, which owns not only geometric property but also topology property.
此时，三维实体的“边界”是指“边界表面网格”，它既具有几何性质，又具有拓扑性质。
2
Through several typical calculating-examples, the methods of solving space distance and curve, and entity inertia by three-dimensional technology in engineering-design field were explained.
通过若干经典算例，说明在工程设计中利用三维技术求解空间距离、空间曲线以及实体惯量的方法。
3
Through analyzing the three-dimensionalentity measurement and reconfiguration based on the buoyancy measurement, the paper has designed a new clamping device.