该文研究山西西南部黄土区小流域的泥沙来源。

The sediment sources in the gully hilly loess area in southwest Shanxi Province, north China was studied.

youdao

该文研究山西西南部黄土区小流域的泥沙来源。

The sediment sources in the gully hilly loess area in southwest Shanxi Province, north China was studied.

youdao