The ambipolar electric field is important and the ambipolar diffusion flux is of the same order of the ion diffusion level.

此时，存在明显的双极电场，而双极扩散流基本上是离子扩散的量级。

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Using variation principle, the difference discrete scheme with diffusion flux form on the irregular hexahedral grid is constructed.

在非正规六面体网格上，用变分原理建立扩散流形式的差分格式。

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Using variation principle, the difference discrete scheme with diffusion flux form on the irregular hexahedral grid is constructed.

在非正规六面体网格上，用变分原理建立扩散流形式的差分格式。

youdao