There is a maximum of the surface diffusivity in high surface coverage.

在表面覆盖度比较高时，表面扩散系数有一极大值。

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Diffusivity is an important parameter of the mass transfer process.

扩散系数是传质过程的一个重要参数。

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Diffusivity is an important parameter of the mass transfer process.

扩散系数是传质过程的一个重要参数。

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