These mathematical definitions make basic landform shape concept of limit determine nat.

继而给出了如斜坡、山、山脊、凹地、谷地、鞍部等基本地貌形态的数学定义。

youdao

These mathematical definitions make basic landform shape concept of limit determine nat.

继而给出了如斜坡、山、山脊、凹地、谷地、鞍部等基本地貌形态的数学定义。

youdao