The uncertainties associated with current stellar models lie in the input physics: atomicdata, convectiontheory, mixing in radiative regions, and mass loss.
当前恒星模型中的不确定性来自于输入的物理参数：原子数据、对流理论、辐射区的混合和质量丢失。
2
No comprehensive theory accounts satisfactorily for the driven force of plate motion and mechanism of mantle convection.
至今还没有完整理论阐明板块运动的驱动力和地幔对流机制。
3
Based on volume averaging theory, natural convection model for melting phase change in porous media was established.