河段

It says more than 600 kilometers of the river are in critical condition and almost 30 percent of its major tributaries are seriously polluted.

报告说，长江有 600 多公里长的河段处于危急状态，将近 30 %的支流污染极其严重。

Based on the analyses of the flow and sediment characteristics and evolution trend of the river bed of the Fuling reach in the Yangtze River before and after the impoundment of the Three Gorges Reservoir, the water level, velocity variation and influenced range in the Fuling reach before and fifty years after the operation of the Three Gorges Reservoir with the construction of the Fuling dock and four discharge combinations are calculated by using a two-dimensional flow mathematic model.

摘要在分析长江涪陵段的水沙特性和三峡水库蓄水前后该河段河床演变趋势的基础上，运用二维水流数学模型，分析了4种流量组合情况下在三峡水库运用前和运用50年，涪陵港区码头修建前后的水位、流速变化及其影响范围。

The water surface level, velocity field and sediment concentration field of gravel-sand bed and sand bed reach on Jianjiang river were refined simulated.

给出了TSMBFOC模型在卵石夹沙及沙质分汊河段航道整治中的应用情况，在水面线、流速分布及河床冲淤详细验证及分析浅滩演变规律基础上，进行多方案比较与筛选的数值试验。

An 1-D sediment mathematic model is developed in the second part. Techniques are suggested for some problems in calculations, such as the effective suspended load carrying capacity of the different bed material reach, the coefficient of suspended load carrying capacity, the recovering coefficient of the carrying capacity, the thickness of the mixed layer, the transport width of the bedload, bifurcation and confluence of main and branch channel, and the distribution of deposition and erosion along the cross section, etc. The numerical scheme of 1-D model is induced.

第二部分建立了一维泥沙数学模型，对计算中的几个关键问题提出了处理方法，如不同床沙组成河段的有效挟沙力、挟沙力系数、挟沙力的恢复饱和系数、床面混合层厚度、推移质输移带宽度、干支流入汇及分流问题、横断面冲淤形态及断面修正方法，导出了一维模型的差分格式。

On the gloomy river reach that coulds there be to another name for Nanning in Nanning, see about a hundred mechanization digs arenaceous boat of boat of arenaceous, pan and carry only digging chaos to collect in disorder day and night, the start the kiloton class new channel that this Nanning reachs Guangzhou paragraph destroy so that suffer misery, make a person distressed.

在南宁至邕宁的郁江河段上，只见上百艘机械化挖砂、淘金船和运砂船在日夜乱挖乱采，把这条南宁至广州的千吨级新航道的起点段破坏得满目疮痍，令人痛心。

Emergency crews on Sunday recovered the bodies of seven of the nine victims from the river between New York and New Jersey.

救援人员周日在纽约与新泽西州之间的河段中搜寻到了9名遇难者中7人的遗体。

Topography: Maotai is located in the Chishui River Valley maitai river of the Yangtze River, and cinnabar red soil is rich in minerals and trace elements; and there is a unique water effect of gravel

地形地貌：茅台地处长江水系赤水河谷茅台河段，硃砂红色土壤中含有丰富的矿物质和微量元素；且有沙砾独特的渗水效应

However, if the trigonal control point and datum transformation model do not exist, the result of base station single point absolute location can be used as reference coordinate, the measured result of which can be geo_referenced to remote sensing image using some tiepoints on the basis of the first result above.

例如 ，在利用遥感影像分类时，需要在外业获取用于监督分类的训练样地或是分类结果精度检验样地的大地坐标信息；在进行稀有树种区域分布特征调查时，希望能在遥感影像上标识出每个树的具体位置；发现某河段发生污染时，很可能需要将它的精确位置以线或面的形式显示在其它矢量或栅格图层上。

Through an illustration of ge neralized fixed bed model simulating Shayang river stretch on the Hanjiang River ,the influences of dock construction on water levels and velocity field have bee n investigated in the model test.

以汉江沙洋河段为对象，通过定床概化物理模型试验研究了码头建筑物对河道水位与流速场的影响。

The research of bend channel of reach Guide-Lijia Flume from Longyang Flume to Lijia Flume in upstream of the Yellow River is proceeded to present rules of feasibility analysis for navigation between the flumes and the riverbed stability.

摘要对黄河上游龙羊峡至李家峡间的贵德－李家峡河段的蜿蜒河道进行了研究，为蓄水两坝间的通航和河床稳定性问题提供可行性分析依据。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。