湿地设计对提高下游水体质量十分有利。
Wetlands can be designed to provide very important downstream water quality benefits.
一旦出现溃坝，必将威胁下游水库的安全。
Once the upstream reservoir breaks dam, the downriver dam will be threatened.
消力池水流流态受下游水深控制，可以分为四种流态。
The flow condition in the plunge pool is controlled by the water depth downstream and can be classified into 4 kinds.
由于雨水的冲刷，还可能将点污染源扩大造成下游水系的污染。
The point-polluting may spread to the lower reaches of a river with the scour of the stormwater.
但是，湖南少年乒乓球选手在全国同年龄段还处于中下游水平。
And, Hunan young table tennis players in the country is also at the middle and lower reaches the same age level.
一只有着狮子鬃毛状的水母在英格兰法儿恩群岛的海域下游水。
A lion's mane jellyfish swims beneath the waters of the Farne Islands, England.
而且检修也比较困难，只适用于下游无水或下游水位很低的情况。
What's more, repairing is a problem except when there is no water downstream or the water level downstream is very low.
浙江作为一个文化大省、经济强省，浙江足球却一直处于国内中下游水平。
As a province with rich culture and strong economy, the football of Zhejiang province always stay in the middle or lower reaches with low production rate of top players.
下游水流缓慢，淤积的冲积土愈来愈多，形成一个有许多岛屿的巨大三角洲。
Downstream water flow slow, siltation of the alluvial soil more and more, forming a great many of the Delta islands.
下游水位越高，变化相同的上游水位时，轴向流速沿径向分布的变化程度越大。
The bigger the downstream water level, the outstanding of variation degree of axial velocity along radius distribution when upstream water level is same.
随上游水位的降低及下游水位的升高，切向流速最大值点也不断向管中心一侧移动。
With the upstream water level reducing and the downstream water level increasing, the highest tangent velocity also moving to the pipe center.
大量的泥沙淤积在下游河道，河床逐渐淤高，是渭河下游水患威胁严重的根本原因。
A great quantity of sediment deposited on the lower river course and riverbed gradually raised and suspended is the essential reason of severe threatening of floods in the lower Weihe river.
大量科学调查和研究表明，目前中方进行的澜沧江水电开发对下游水量和环境影响很小。
A host of scientific research and studies have made it clear that the current hydropower development on the Lancang River has little impact on the downstream flow and environment.
高坝水头高、泄洪功率大，下游水垫塘的稳定性是其能否安全运用的关键性技术之一。
The stability of a water cushion pool by the action of high water head and large flood-discharge power is one of the key technologies which relate to its safe operation.
剪应力临界点的位置受反倾结构面的产状、坝体参数、上下游水位差等多种因素的影响。
The location of the critical point is influenced by multiple factors, including occurrence of inversely dipping discontinuity, configuration of dam body, water level, etc.
当上游有水库，其防洪标准低于下游水库时，下游水库必须考虑上游水库溃坝洪水的影响。
When there exists reservoir upstream, whose standard for flood control is lower then that in downriver, the dam-break flood upstream must be considered.
根据高坝下游水垫深度的不同，塘内水流呈现自由冲击射流、淹没冲击射流和面流三种流型。
It is found that three patterns may occur to the flow in the pool including free impact jet, submerge impact jet and surface flow according to the downstream water level.
从泵的出口，水流通过上游水箱(在轴流式水轮机这边)、模型机、下游水箱返回泵的进口。
Starting from the outlet of the pump, the water runs through the upstream tank (on the Kaplan side), the model, the downstream tank and back to the inlet of the pump.
对中下游水土流失相对较轻，重点对河岸、河道重建生态性护岸，构建一定宽度的植被防护带。
To middle and lower reaches soil and water loss relative light, key to river bank, reconstruction ecology shore construction certain width vegetation protective belt.
该方案的实施可以有效地缓解黄河上、下游水资源利用的矛盾，使有限的水资源发挥较大的效益。
The problems for water use between up and down stream can be solved and the higher efficiency of water use can be obtained.
在现有研究成果的基础上，对闸站平面不对称布置枢纽上下游水流流场的数值模拟方法进行了探讨。
Based on available research results the author probes into the numerical modeling of velocity field of upstream and downstream flow of project with asymmetric plan layout of gate and plant.
通过对长江下游水域散装液态危险货物运输的风险分析，探讨加强该水域化学事故风险管理的措施。
The measures of strengthening the mangement of chemical accidents are discussed by analysing the risks in transportation of dangerous goods of bulk liquid at down stream of the Yangtze River.
当下游水位最低时，尾水管进口真空变化最明显，随着下游水位的上升，尾水管进口真空度逐渐改善。
The vacuum degree at tailrace adit varies most significantly at the lowest downstream water level and improves gradually along with the rising of downstream water level.
但如今，大坝导致下游水量的减少为这种蜗牛无限制的繁殖提供了条件，也使得一些地区的血吸虫疾病大肆传播。
Now, the decreased flow downstream from the dam is allowing the snails to breed unchecked, which has already led to a spike in schistosomiasis cases in some areas.
研究表明：该区随灌溉面积的扩大，地下水位上升迅速，灌区下游水位将超过临界埋深，从而引起土壤次生盐渍化。
The studies show the groundwater level is rising quickly and may surpass the critical depth along downstream area with the extension of the irrigating field, which can bring on the soil salinization.
本文运用POA算法的原理，建立了一个大型混联水库群考虑下游水位变化，适用于任何来水年份的变维线性模型。
A multiple reservoir is established with the POA algorithm theory. This reservoir can be applied to any variable dimension linear model of the water-coming year.
讨论了含梯级水电站的大型水火电力系统有功功率最优分配的数学模型，考虑了水电厂上、下游水位的变化、梯级水电厂间的水流时间延迟等因素。
In this paper, we discuss a mathematical mode for optimization of active power dispatch of large-scale hydro-thermal power systems with cascaded hydropower stations.
讨论了含梯级水电站的大型水火电力系统有功功率最优分配的数学模型，考虑了水电厂上、下游水位的变化、梯级水电厂间的水流时间延迟等因素。
In this paper, we discuss a mathematical mode for optimization of active power dispatch of large-scale hydro-thermal power systems with cascaded hydropower stations.
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