The paper presents an efficient approximate algorithm for Convex Hull of very large planar point set. That is Point Set Coordinate Rotation Algorithm(PSCR).
提出了一种计算海量平面点集凸壳的快速近似算法——点集坐标旋转法（PSCR）。
The multi polar coordinate and complex function are used to put forward an approximate analysis method for scattering of steady P wave around a circular lining in half space.
本文采用多极坐标和复变函数方法针对半无限空间中P波在一衬砌周围的散射问题提出了一种近似求解分析方法。
An improved implicit approximate factorization algorithm for the generation of body-fitted curvilinear coordinate systems has been developed.
本文提出一种改进的贴体坐标隐式近似因子分解生成方法。
Using polar coordinate system to set out, the coordinate computing formula and the error of its approximate formula are discussed of any point in line.
本文用极坐标法放样，讨论了线路曲线中任一点坐标计算公式及其近似公式的误差大小。收藏。
Using polar coordinate system to set out, the coordinate computing formula and the error of its approximate formula are discussed of any point in line.
本文用极坐标法放样，讨论了线路曲线中任一点坐标计算公式及其近似公式的误差大小。
The camber equation has been established by means of space alternate coordinate; the numerical approximate calculation is replaced by accurate calculation.
利用空间坐标变换法，得出弯管状屏蔽体的曲面方程式，用精确解析解取代了常用的数值近似解。
The camber equation has been established by means of space alternate coordinate; the numerical approximate calculation is replaced by accurate calculation.
利用空间坐标变换法，得出弯管状屏蔽体的曲面方程式，用精确解析解取代了常用的数值近似解。
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