单词：sloping surfaces
sloping surfaces的用法和样例：
例句
- 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。
- 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。
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