同时提出岩石河床冲刷研究的关键课题。

At the same, it put forward the key subject on the rock riverbed scour study.

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在许多情况下，这种河床冲刷是有利的。

In many instances, such bed degradation is beneficial.

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在许多情况下，这种河床冲刷是有利的。

In many instances, such bed degradation is beneficial.

youdao