凸体的混合体积理论提供了统一处理各种不同的重要的几何量的方法，比如体积和表面积等。
The theory of mixed volumes provides a unified treatment of various important metric quantities in geometry such as volume and surface area.
然后，把这些结果从一般的混合体积和投影体推广到混合投影体的极和混合仿射表面积上，获得了一些较理想的结果。
Then, the authors improve above results from mixed volume and projection bodies to the polars of mixed projection bodies and affine surface area, and get some analogous results.
本文中我们采用扩展混合有限元方法和混合体积元方法数值模拟了二阶拟线性抛物型积分微分方程和二阶拟线性抛物问题。
In this paper , we consider the Expanded Mixed Finite Element Method and mixed covolume method for the quasilinear parabolic integro-differential equation and quasilinear parabolic problem.
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