查询词典 catchments

This study deals with precipitation fluctuations in the transitional zone between the arid and semiarid regions of northwest China from the 1950s to the 1990s,discusses spatial variation of 250 mm isohyet during the dry years and wet years; and systematically studies rainfall harvesting system relative to runoff inducing catchments, water storage and highly efficient utilization and evaluates the influence of rainwater harvesting on regional development and environment conservation.

分析了干旱半干旱区过渡带降水的时空变异性，确定了250 mm降水量线在丰枯年份的空间摆动幅度。

Optimization of rainwater catchments makes planning and constructing the storm sewer system more efficiently.

对雨水汇水区进行优化计算可以更加高效地进行城市雨水管网的规划和建设。

Defining the rainwater catchments is a primary and essential step in programming and constructing urban storm sewer system, which step will directly decide the layout of the urban storm sewer system.

确定城市雨水汇水区是城市雨水管网规划建设中首要的，也是最关键的步骤，其直接决定着城市雨水管网的布局。

Water system is an important part of Basin. The information of water system (such as the classification of watercourse, the area of catchments, and so on) is the basic data which is used to the hydrological models.

水系是流域的重要组成部分；水系信息(河道的分级、集水面积等)是水文模型分析的基础数据。

And according to the characteristics ofunderlaying surface of catchments and that of runoff, the variation of impoundage was takeninto consideration in runoff model.

并通过分析流域下垫面和径流特点，考虑了土壤蓄水容量的变化，进一步认识流域水文循环变化规律，提高了洪水预报精度。

In this paper,a revised universal soil erosion e-quation was selected, the effects of errors of this neglection on it were tested by non-parametric hypothetical test method of Kolmogorov-Smirnov for a 22-year period within 21 catchments of the middle Huanghe River region,and the resul...

采用非参数假设检验方法，对年产沙模数估计方程中下垫面因素的时变影响作定性分析，结果表明，对于一般流域，如果没有人类活动或自然灾害破坏导致下垫面条件的突变，下垫面因素对产沙的影响可看作是时不变的。

The transportation of hyper-concentrated flows in gullies is also investigated and the estimation method for small catchments is developed.

坡面面蚀和细沟侵蚀是流域水土流失的重要来源，同时也引发面源污染，加剧径流水质的恶化。

In Australia, roofs will be turned into drinking water catchments to boost dam levels.

在澳大利亚，屋顶将被改变成收集饮水的集水区以提高水库水位

In the process of economic development, some metropolitan areas have emerged usually with one or more central cities and the catchments cities.

全球在经济发展过程中形成了由一个或多个经济中心城市以及经济关联城市形成的大都市区域。

The impact of the spatial distribution pattern of land use on runoff and sediments would differ at different catchments scales.

土地利用类型空间分布格局对径流和泥沙的影响随集水区空间尺度的变化而有所不同。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。