顶沟 meaning in Chinese

vertical furrow

According to physiognomy , the bulk density changed as the following order : upland > hills > hillslopes > gully slopes , the saturated soil moisture arranged as : hillslopes > hills > gully slopes > upland , while field capacity and wilting moisture are as follows : gully slopes > hills > hillslopes > upland
在地貌上，土壤容重呈现出塬面梁顶沟坡梁坡，饱和含水量呈现出塬面沟坡梁顶梁坡，田间持水量和萎蔫湿度均呈现出沟坡梁顶塬面梁坡的趋势。