这两种函数特征都是一曲率凹向上的图象，它表明随着降雨量的增大，单位降雨量所引起的土壤侵蚀量在逐步增大。

Both of the two function are convex curvature images, which shows that with rainfall increasing, the amounts of soil erosion resulting from per unit rainfall increases step by step.

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这两种函数特征都是一曲率凹向上的图象，它表明随着降雨量的增大，单位降雨量所引起的土壤侵蚀量在逐步增大。

Both of the two function are convex curvature images, which shows that with rainfall increasing, the amounts of soil erosion resulting from per unit rainfall increases step by step.

youdao