sloping surfaces

• 坡面

sloping surfaces的用法和样例：

例句

1. Study on Design of Sloping Stable Forest Structure in Hilly-Gullied Area of Loess Plateau.
   黄土丘陵沟壑区坡面稳定林分结构设计研究。
2. The fine grains are more at the tail than at the foreside at the same parallel to the slope surface.
   沿坡面方向，在离土面相同距离的位置，后部细颗粒多，前部细颗粒少。