1) Ditch density
沟渠密度
2) canal system density
渠系密度
3) canal density
渠道密度
1.
In order to research the relationship between canal density and canal-system water use efficiency,the condition of canal seepage is analyzed,and the mathematical relation between the canal density and canal-system water use efficiency is established for different canal densities under the same canal lining conditions.
为了研究灌区渠道密度与渠系水利用系数之间的关系,首先从分析渠道水的渗漏情况入手,分析了渠系水利用系数与渗漏之间的关系,建立了在相同衬砌条件下渠道密度与渠系水利用系数之间的数学关系。
4) rill density
细沟密度
1.
The experimental data of the slope erosion are analyzed by stochastic theory and fractal geomety,and some quantitative descriptions for the slope pattern ofthe slope erosion are obtained according to the rill density and fractal dimension of the rills.
本文利用随机理论和分形几何学方法，对坡地侵蚀实验资料进行分析，以坡面细沟密度指标及沟系分维数对坡地侵蚀的平面形态进行了定量描述。
2.
Furthermore,the soil erosion of the slope was analysed by means of the rill density.
从分析细沟床面上切应力出发，在细沟全断面泥沙处于临界起动条件下，导出了细沟临界断面方程并讨论其水力几何要素的变化，进一步提出用细沟密度去分析坡地的土壤侵蚀程度。
5) gully density
沟壑密度
1.
A discussion on the mathematical model of theoretical maximum of gully density;
流域沟壑密度理论极值数学模式商讨
2.
, are used to investigate the gully density.
沟壑密度是评价小流域沟蚀程度的指标，具体地反映了小流域沟蚀轮廓。
3.
In defferent evolution periods, the relation between gully density and cutting depth is various.
主要探讨了在流域地貌演化的不同阶段，沟壑密度与切割深度的复杂关系，建立了沟壑密度随切割深度变化的理论极值模型及相应阶段的函数，补充了各演化阶段地貌形态要素的定量、定性描述；反之，可用沟壑密度与切割深度的关系推断流域地貌的演化阶段。
6) different scales of canals
不同尺度沟渠
补充资料：沟渠
为灌溉或排水而挖的水道的统称。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条