泥石流扇的平面形态可用规则的几何图形来模拟。

The plane shapes of debris flow fan can be simulated with the combinations of one or two regular geometric figures.

youdao

泥石流扇的平面形态可用规则的几何图形来模拟。

The plane shapes of debris flow fan can be simulated with the combinations of one or two regular geometric figures.

youdao