定义3.3含有边界边的网格称为开网格(OpenMesh),否则称之为闭网格(Close Mesh)。 定义3.4对于网格中的任意一个顶点形,与其直接相连的边的数量称为顶点¨的价 (Valence),记为N。
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The cube surfaces open and close, incorporating raw steel walls, blackened mesh screens, metal shelves, recesses, decorative niches and sliding doors.
粗钢墙面的黑盒子上嵌有推拉门,外层另附一层可移动的熏黑纱网,随开启露出内层的金属书架,凹槽和装饰壁龛。
The surface of thin mesh wool fabric is covered with Fine close holes, which is the popular dry and crisp material in the world.
薄型网眼毛织物的呢面上布满细密的小孔,是当今世界上流行的干爽型面料。
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