扩散理论

diffusion theory的用法和样例：

例句

Many of the above-mentioned trends can be rationalized in terms of quasi-steady diffusion theory.上述的许多问题可用准稳态扩散理论加以推理。
According to the need for study on methane movement law in fully mechanizedsublevl caving stopes,the methane rising and pressure diffusion theory is put forward.依研究综放采场瓦斯运移规律的需要，提出矿井瓦斯气体浮升与压强扩散理论。

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