up and down slope

A dual box system ( one is rill box and the other is feeder box) with 15 gradient and clay loess is used to quantify effects of runoff and sediment from up slope on down slope rill erosion and sediment under different sediment concentrations and rainfall intensities.

利用双土槽系统径流小区（供沙土槽和试验土槽），定量研究了不同上方来水含沙量和不同降雨强度下15°坡面上方来水来沙对坡下方细沟侵蚀产沙过程的影响。

For the loose and compact surface treatments, the net sediment delivery ( S) caused by up-slope runoff accounts for the total sediment delivery Sft at down-slope 72.4 to 92.7% and 45.5 to 83.7%, separately.

对于疏松土和紧实土处理，上方来水引起坡下方的净侵蚀产沙量S分别占总侵蚀产沙量S（ft）的72.4%-92.7%和45.5%-83.7%。

A dual-box system, consisting of a feeder box, located at up-slope, and a test box, located at down-slope was used to quantify impacts of runoff and sediment from up-slope on rill hydraulic parameters under different rainfall intensities of 50,90 and 130 mm/ h.

利用供沙土槽和细沟土槽双土槽径流小区系统，定量分析了粘黄土陡坡地在50、90和130mmh降雨强度下上方来水来沙对坡下方细沟水流水力学参数变化的影响。

They picked up momentum, then slipped into neutral and coasted quietly down the slope.

他们加大油门，再切入空挡，随后没大响动地滑下山坡。

Find a relatively flat slope, ski slowly down the slope, while doing this, move up and down.

找一段适合坡度的平坡，缓慢的滑下坡。滑行时，身体向上和向下移动。