In this paper, finite bulk-finite element means is presented for solving convection-diffusion problem, moreover give out the stability analysis.

将有限体积和有限元方法相结合，解决对流扩散方程问题，并给出了稳定性分析。

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By using the finite-difference method, a solution is obtained in this paper to the diffusion problem of the catalytic agent released by the airplane.

本文利用有限差分法对飞机播撒催化剂的扩散问题进行了求解。

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In this paper, we proposed a diffusion equation for simulating the problem of pollution, and discussed its application to point pollution, especially while instantaneous point pollution happened.

给出了一个适合于模拟污染问题的扩散方程，讨论了它在点污染，尤其是在瞬时点污染发生时的应用。

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Simcoe, an assistant professor at Boston University, adds that such policies might also resolve a type of coordination problem often seen in the diffusion of technology standards, such as the Universal Serial Bus (USB) interface or a new video game console.

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