通常把坡面的垂直高度h和水平宽度l的比叫做坡度，即tan a值 (a为斜坡与水平面夹角) 坡度系数：即用百分数来表示坡面与水平投影面的比值 坡度系数=1/tan a×100%(a为斜坡与水平面夹角)
坡度比雨量对土壤、缓效钾和速效钾的流失影响更大。
Slope gradient has more effect on the loss of soil, slowly available K, and rapidly available K than amount of rainfall.
在低海拔区，北向和偏北向坡度比南向和偏南向的坡度大；
The gradient in the lower altitude area is steeper than that in the higher altitude area.
通过对门式刚架的整体稳定分析，研究了刚架的高跨比、斜梁坡度对结构的稳定和计算长度系数的影响。
Through over-all stability analysis, the influence of height-span ratio, rafter slope to the stability and the effective factors of gable portal frames are also presented in this paper.
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