...定这个球体是被平滑过渡来照射的，并已经“猜测”出把组成物体的多边形法线考虑在内后的值，和Geometry Approximation(几何近似)的discontinuity非连续性设置的值，等等。
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geometry multiscale approximation 几何多尺度逼近
Numerical Approximation and Computational Geometry 数值逼近与计算几何
According to the Maxwell equations, an analytic solution related with coaxial diode current, applied voltage and geometry parameters is obtained by introducing certain approximation.
从描述电子束运动的基本方程出发，引入一定条件下的近似，获得了一种实用的同轴二极管电流、电压与几何参数关系的近似解析解。
In this paper, the rationality of the multigroup approximation of the control critical eigenvalue equation for the slab geometry is studied.
研究了板几何控制临界本征方程多群逼近的合理性。
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