The center focus decision problem is an important part of the differential equation theory.
中心焦点判定是微分方程定性理论的重要组成部分之一。
The research of delay differential equation is very important in theory and in practice.
这篇文章的主要目的是研究时滞对种群生长的作用。
The Out-differential Equation of Ideal Fluid in General Theory of Relativity;
爱因斯坦的广义相对论所预言的运动与牛顿理论稍有差异。
The Out-differential Equation of Ideal Fluid in General Theory of Relativity;
爱因斯坦的广义相对论所预言的运动与牛顿理论稍有差异。
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