沟下 meaning in Chinese

cau ha
mizoshita

The proportion that the sediment yield of the main gully accounts for the total sediment yield of the experimental watershed model is from48 . 7 % to 66 . 6 % , and the proportion that deposition sediment yield of main gully accounts for the total deposition sediment yield of the experimental watershed model is from64 . 9 % to 99 . 4 % . the developing process of topographic feature of the experimental watershed model . expanding the gully width and cutting down the gully bottom are the two chief forms of the topographic feature development
流域模型地貌形态发育过程沟谷扩展和下切是流域模型地貌形态发育的主要形式，沟谷扩展发育主要发生在发育活跃时段，主沟所占沟谷总面积比例在流域模型沟谷扩展发育过程中保持在60以上：主支沟下切发育在发育初期和发育活跃时段前期表现最为剧烈，其横剖面为v字形，在发育初期和稳定时期时段呈现浅u字形和底部较为平坦的梯形，主沟的横剖面发育明显优先于各支沟。