二维分布 meaning in English

bivariate distribution
two-dimensional distribution

Bivariate distribution function
二维分布函数
Their weights vary with the velocity of the platform and the requirements of the precision and the data - rate of the ins or gps are very high at the beginning the distribution of the space - time spectrum of the clutter is studied
一方面，主瓣杂波的带宽和斜率随着扫描方位角的变化而变化；另一方面杂波的二维分布随着距离或俯仰角的变化而变化。
The corresponding control equation is given . the control equation and boundary condition about the addiontional small deformation ' s effect caused by initial stress using virtual principal theory in cylindrical reference frame . generalized stress and strain and equivalent constitutive equation are given
第四章提出了描写柱形薄壳中初应力的数值特征，将应力的三维分布转化为二维分布，给出相应的支配方程；在柱坐标系中，利用虚功方程建立了初应力对附加小变形影响的控制方程和边界条件；给出了广义应力、广义应变及等效本构关系。