在成土过程中，土壤微量元素的含量分布具有一定的规律性。

The contents and distribution of soil microelement follow certain regularity in the process of soil-forming.

youdao

在成土过程中，土壤微量元素的含量分布具有一定的规律性。

The contents and distribution of soil microelement follow certain regularity in the process of soil-forming.

youdao