On the periphery of its range, populations have declined, primarily due to habitat modification, dam construction, river flow modification, wetland drainage, and pollution.
但是在边缘地带，其数量有所减少，主要归咎于其生活环境的改变、水坝建设、河流改道、湿地干涸以及环境污染。
Fuel consumption and pollution might be reduced by smoothing traffic flow and running vehicles close enough to each other to benefit from aerodynamic drafting.
车流通畅，相互紧随行驶的车辆能利用前车产生的较小的空气阻力，这些都可能减少油耗和污染。
Discharge valve can be will collect the liquid and solid particle emissions, prevent the liquid flow off the downstream, the pollution downstream compressed air system.
排放阀可以将收集的液体和固体微粒排放掉，防止液体流向下游端，污染下游端的压缩空气系统。
Rivers eventually flow into the sea, carrying their pollution with them.
河流最终流入海洋，污染物也随之入海。
Reasonable type of road cross section could ensure the smooth vehicle flow, at the same time, it could reduce the pollution of traffic to environment through reasonable greening arrangement.
合理的道路横断面型式一方面可以保证车流的畅通，另一方面也可以通过合理的绿化布置减少交通对环境的污染。
The advantages of this technology are simple process flow, compact installation, no secondary pollution, low cost and wide range of application, etc.
该技术具有流程简单、占地面积小、无二次污染、费用低、应用范围广等特点。
The common gear pump has such merits as simple structure, low cost, insensitive oil pollution, etc. but it has such demerits as high flow pulsation, unbalanced radial force, strong noise, etc.
普通齿轮泵具有结构简单、成本低、对油液污染不敏感等特点，但具有流量脉动大、径向力不平衡、噪声高等缺点。
Pingjiang in the Miluo River in the preceding paragraph, mining, gold discharge of sewage, tailings, water pollution and impede water flow.
平江处于汨罗江的上段，采矿、淘金排放的污水、尾砂，污染水质，阻碍水流。
This technology has simple flow path, less environmental pollution, high goldleaching rate and great value of popularization.
试验研究表明：该工艺流程简单易行，对环境污染小，金浸出率较高，具有推广价值。
Based on the problems of flowing block and pollution, and flow and heat transfer, presents application characteristics and key technologies.
基于阻塞与污染问题、流动与换热问题，探讨了城市污水的应用特点及其技术关键。
To improve the self-purification ability and pollution situation of river water, control the pollution load and ensure the river basic flow are two important ways.
在控制污染负荷排放的同时，也要保证河流基本流量，提高水体自净能力，改善渭河水体的污染现状。
Aiming at SO2 gas pollution from BF-BOF process, an analytic model of sulphur flow was established based on the theory of industrial metabolism and the method of material flow analysis.
针对高炉-转炉流程生产过程产生的SO2烟气造成环境污染的问题，以工业代谢理论为基础，应用物质流分析方法，建立了工序的硫素流分析模型。
The developing trend of microbial treatment and flow chart is discussed, then, some suggestion is provided to prevent wastewater pollution.
对磷矿废水处理的发展趋势进行了探讨，给出了生物处理法的简易流程，并就防治废水污染提出了几点建议。
China, in its first-ever nationwide water resources survey will attempt to quantify just how much water it has, how much it needs and how much pollution is part of the flow.
中国将展开第一次全国水利普查，试图确定其水资源状况、对水资源的需求以及河流湖泊的污染程度。
The research on the pulverized coal flow and combustion in the pulverized coal furnaces is one of the most significant studies of the control of pollution resulting from the coal combustion.
煤粉燃烧室内煤粉流动与燃烧的研究对于控制煤燃烧产生的污染问题有着至关重要的意义。
But the water resource faces some problems such as flow reduction, flood and pollution.
但是，岷江上游的水资源面临着总体水量减少，洪水以及水体污染等问题。
The status and pollution characters of soil, irrigation water and air quality in agricultural producing area were analyzed, and a flow chart of division for non-producing area was also given.
本文对我国农产品产地土壤、水和大气的环境污染现状进行了分析和描述，提出了禁产区划分的技术程序。
Landfill should be avoided to minimise disturbance of habitat, sediment pollution, alteration to stream flow dynamics and effect on habitat.
在垃圾处理的过程中应该尽量避免打搅到动植物的天然栖息地，避免产生沉淀物的污染，最小化对水流与天然栖息地的污染。
The process flow of cleaner production for hot dip galvanizing was introduced and the energy consumption was analyzed. Some improvements in decreasing pollution and saving production costs were given.
介绍了热浸镀锌清洁生产工艺流程，分析了热浸镀锌过程中的能耗，给出了相关的改进措施，减少污染的同时节约了生产成本。
And meanwhile, the fast and smooth flow of traffic reduces the air pollution caused by engine-idling.
同时，快速而又流畅的车辆还会减少由发动机怠速导致的空气污染。
Knowledge of lateral variations in stratigraphic units and structures is useful in constructing groundwater flow models, which aid in identifying possible pollution migration pathways.
地层单元和结构的横向变化数据在地下水流动模型的建立方面非常有用，模型的建立可以帮助确定污染物迁移的可能途径。
The scope of Pulse rectifier's application areas has become more extensive for the advantage of bidirectional power flow, adjustable power factor and reducing the grid's "pollution", etc.
脉冲整流器因为能实现能量的双向流动、调节电网功率因数及减小对电网的“污染”等优点，其应用的范围领域也越来越广泛。
Gas-solid two phases flow is broadly exist in industry and nature. Research on it is very important, which can help us optimize the manufacture process, improve efficiency, and reduce pollution.
气固两相流在工业和自然界是广泛存在的，对其进行研究有着重大的意义，如优化生产工艺，提高生产效率，减少工业污染等。
This process was characterized by simple flow sheet, low pollution, high product yield over 80%, and high product purity over 99%.
此合成工艺流程简单、污染小，产品收率大于80%，提纯后的产品纯度大于99%。
The method has the advantages of simple process flow, low equipment cost and energy consumption, and no wastewater pollution, and is suitable to be popularized and applied in a large area.
本发明具有工艺流程简单，设备成本和能耗低，且没有废水污染的优点，适合大面积推广和应用。
It was found that the development of the power stations caused serious pollution, water eutrophication, river flow cutoff and other negative effects.
结果表明，电站开发造成库区污染严重、富营养化、河段断流并产生一定的不利影响等。
According to Zijin, 9,300 cubic meters of water leaked into the Ting River 'causing a certain level of pollution' over the nearly 24 hours it took to plug the flow.
根据紫金矿业的说法，9,300立方米的废水泄入汀江，紫金矿业用了其近24小时封堵，在此期间导致了一定程度的污染。
The expectation through USES the advanced thing to flow the technology, the thing flows the facility, the greatest degree reduces to the environment pollution, enhances the resources the use factor.
期望通过采用先进的物流技术、物流设施，最大程度地降低对环境的污染，提高资源的利用率。
The drainage function of split-flow rainwater system is affected by non-rainwater inflow, and directly discharging the mixed wastewater can cause serious pollution of receiving bodies.
分流制雨水系统的非雨水入流不但影响其正常的排涝功能，而且混接污水的直接排放还易导致受纳水体的严重污染。
The drainage function of split-flow rainwater system is affected by non-rainwater inflow, and directly discharging the mixed wastewater can cause serious pollution of receiving bodies.
分流制雨水系统的非雨水入流不但影响其正常的排涝功能，而且混接污水的直接排放还易导致受纳水体的严重污染。
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