This paper analyses the characteristics of runoff and sediment changes since 1950 in the Upper and Middle Yellow River.

本文对1950年以来黄河上中游水沙变化特点进行了分析。

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This paper analyses the characteristics of runoff and sediment changes since 1950 in the Upper and Middle Yellow River.

本文对1950年以来黄河上中游水沙变化特点进行了分析。

youdao