流域

They plotted to make the whole Mississippi Valley secede from the United States.

他们阴谋策划使整个密西西比脱离美国。

Palaeocurrent measurements suggest a northward direction,indicating that the Kunlun area was at low elevation.

中新世的沉积以细颗粒泥岩和砂岩为主，表明物源区较远 ，坡度较小，搬运距离较长。

Too much rain is the problem of the equatorial lands in the Amazon and Congo basins.

雨水过多是亚马逊河与刚果河赤道地区的大问题。

The daily streamflow in the Yalu watershed located in the north-eastern part of China was simulated by the DAWAST model.

本文利用DAWAST模型对雅鲁河实测日径行了模拟。

This method can acurately simulate the flow direction in gird near river, and can keep the direction of waterflow from crossing the watershed of subdrainage area.

这样既可以较精确地反映出河道附近格网的水方向，又可以让各个内的汇方向和水方向不会跨的分水岭。

Four alluvial deposits distributing along Yuanjiang river and the diamondiferous rocks that supply diamonds to these placer deposits have striking properties of varied sources and multi-phases.

沅水分布4个金刚石砂矿床，供给金刚石砂矿的含金刚石岩体具多期多源特点。

The area above Chashang Section in the Beishi River Valley, a tributary of Fen River, is made up of forested and unforested lands in one and the other.

汾河支北石河岔上断面以上由林地和无林地插花分布组成。

The study on digifax of integrated water resource plan of Taihu basin set up a digital system over the lake basin, which included pollution load model and the water quality model.

摘要太湖水资源综合规划数模研究建立了一个覆盖全的，包括污染负荷模型、河网湖泊相耦合的水量水质模型的数字系统。