- 更多网络例句与叉乘法相关的网络例句 [注：此内容来源于网络，仅供参考]
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This article focuses on the line-line, line-region and region-region topological relations algorithm, which come down to the same question: whether there are intersections between line and line. The sweep-line algorithm was studied by many people, but has some deficiencies to be improved, in order to handle some special cases and increase program efficiency. My works as follows: rectangular envelope to reduce executive times , vector cross multiplication to determine intersection between line and line, coordinates and slope method to deal with some special cases. C program examples are showed together.(5) Finally, to prove capability and efficiency of the model and calculation method, some test systems are developed. For example, complex spatial topological relation query, parcels' exact area with the area of linear object reduced in land use, quality inspection to cadastral data according to topological rule, spatio-temporal change query of cadastral data.
将线线、线面、面面之间的拓扑关系实现的算法归结为线与线之间求交的基本问题；为处理一些特殊的拓扑关系情况，提高扫描线算法的效率，探讨了包络矩形粗滤、判断线线是否相交的矢量叉乘法、线节点重合或共线的斜率坐标判断法等改进方法；同时还设计了一种新的节点微小圆求交的算法，可应用于图斑与线状地物细分拓扑关系及地类面积的计算；（5）本文设计了实验系统，包括复杂对象的拓扑关系表达与计算程序、图斑地类面积的计算程序、基于空间拓扑关系规则的地籍数据库质量检查功能，以及时空拓扑关系和变化语义分析等原型，验证了拓扑关系表达模型和计算方法的可行性和实用性。
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In this equation,* is a scalar multiplication, x is a vector cross product, and .
在方程式中，"*"代表纯量乘法，"x"是矢量的叉积，而"。"
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We use least squre method to form conicoid mathematic model and fit the point cloud which has been grouped by octree subdivision method.
应用最小二乘法建立二次曲面的数学模型，对于已用八叉树分组的点云数据实现隐函数拟合。
- 更多网络解释与叉乘法相关的网络解释 [注：此内容来源于网络，仅供参考]
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multiplication cross：叉乘,交叉相乘
multiplication constant 增殖系数,倍增常数,倍增系数 | multiplication cross 叉乘,交叉相乘 | multiplication factor 倍增系数,倍增因数,乘法因数,乘数=>増倍率
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multiplication cross：叉乘
乘法同余法 multiplication congruent method | 叉乘 multiplication cross | 乘法周期时间 multiplication cycle time
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crossed product：叉积,向量积
crossed multiplication 交叉乘法 | crossed product 叉积,向量积 | crossfooting 交叉验算