短语词组短语slope soil erosion 坡面土壤侵蚀的slope gully erosion 坡沟侵蚀hill slope soil erosion 坡面土壤侵蚀slope disintegration erosion 崩岗侵蚀slope surface erosion 坡面冲刷slope erosion treatment 边坡冲刷防治Slope erosion experiment 边坡冲刷试验 返回 slope erosion