面蚀 1. To study thesurface erosionof highway slopes,Guyuan interchange in 2. 为研究高速公路边坡面蚀,选择银武高速公路同心至固原段固原立交2。 2. Both gully erosion andsurface erosionwere investigated. 根据水力侵蚀面蚀和沟蚀两种不同侵蚀形态发生过程