These clay minerals mainly come from parent material, a few from pedogenic processes, and dust input is minute.

它们主要来源于母质，其次来自成土过程，降尘输入量极有限。

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These clay minerals mainly come from parent material, a few from pedogenic processes, and dust input is minute.

它们主要来源于母质，其次来自成土过程，降尘输入量极有限。

youdao