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河口三角洲的英文

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"河口三角洲"怎么读用"河口三角洲"造句

英文翻译手机手机版

  • estuarine delta
  • estuarinedelta
  • estuary delta
  • fan delta

例句与用法

  • These reflect that the delta ecosystem environment has gradually ameliorated
    这反映出黄河流域水量统一调度后,河口三角洲生态环境正逐步恢复。
  • Furthermore , there lies large areas of silt in the foundation soil of several mass oilfields in many countries
    然而粉土在国内外的分布均较广,尤其是在河口三角洲
  • As the oceans swell with water from melting ice sheets , it is the crowded river deltas in southern asia and egypt , along with small island nations , that are most at risk
    此外,因为冰川融化而导致的海平面上升将给人口密集的南亚和埃及河口三角洲带来巨大的威胁。
  • This paper mainly puts forward the comparative index for ecosystem environment relating with water dispatching , and analyses the variation of ecosystem environment by using remote sensing , hydrological data and investigated data
    文章提出了评价水量调度效果的河口生态环境对比指标,并尝试运用遥感技术、水文数据和调查资料,对比分析了水量调度前后河口三角洲生态环境变化情况。
  • According to the definition in ramsar convention , wetlands include marshes , peatlands , wet meadows , lakes , rivers , floodplains , river deltas , tide flats , reservoirs , ponds , rice paddies as well as marine areas with water depths under six meters
    按照《湿地公约》定义,沼泽、泥炭地、湿草甸、湖泊、河流、滞蓄洪区、河口三角洲、滩涂、水库、池塘、水稻田以及低潮时水深浅于6米的海域地带等均属于湿地范畴。
  • Study achievement appears as following aspects : ( 1 ) yellow river estuary gate river flow and tide flow mixed area is not keep standing deposition status , on special income water and sediment conditions , boundary conditions and oceanic power conditions , this area may on the scour status ; ( 2 ) observed from estuary sediment deposition distributing process : delta and sea offing area sediment deposition vary trend is similar , each part sediment deposition scale varies as wave shape ; ( 3 ) on estuary gate , affect the sediment deposition factors , primary factors are tide prop , the gate widens gradually , estuary gate have branches , brine induced flocculation . this paper study the estuary gate widen , estuary gate have branches to affect the river channel deposition in quantity ; ( 4 ) based on field measured data , for the first time , deduce the estuary sediment deposition and distributing regress formula which can estimate estuary different areas sediment deposition volume ; ( 5 ) this subject demonstrate the estuary delta coastline dynamic balance conception , build the relationship between the estuary income sediment with deposition land area , draw the following important conclusion : when estuary years - averaged income sediment keeps at 345 million tons , the delta coastline may on the dynamic balance status . ( 6 ) this subject firstly brings up estuary sediment optimized control conception , and has the primary study on the macroscopically optimized control conception method
    研究认为: ( 1 )黄河河口口门迳流潮汐区域并非持续保持淤积状态,在特定的来水来沙、边界条件和海洋动力条件下,该区域可以处于冲刷状态; ( 2 )从河口泥沙沉积分配的过程来看:三角洲与滨海区泥沙的沉积变化趋势是基本一致的,各部位的泥沙沉积比例变化基本呈波动状态,且三角洲与滨海区泥沙的沉积比例与来沙量密切相关,基本成正比关系; ( 3 )在口门处,影响泥沙沉淤的因素主要集中在潮汐顶托、口门逐渐加宽、河口门分汊、盐水造成絮凝等,本报告主要对口门加宽,口门西妥理工大学工程硕士专业学位论文分汉对河道淤积的影响进行了定量分析: (一扣根据实测资料首次建立了河赎流路泥沙沉积分配的回归计算式,据此可以预估计算河口不同区域泥沙的沉淤量; 、 5 )本项研究首次论证了河口三角洲岸线动态平衡的概念,并建立了黄河河口来沙量与造陆面积的相关关系,得出了当河口多年平均来沙量维持在3 . 45亿t时其河口三角洲岸线则可能处于动态平衡状态的重要结论; ‘ 6 )本项研究首次提出了河口泥沙优化调控的概念,并对其宏观优化调控模式进行了初步探讨。
  • Abstract : a numerical model for wave propagation in water of varying topography and current is proposed , and time - dependent wave mild - slope equation with a dissipation term and corresponding equivalent governing equations are presented . two different expressions of parabolic approximations for the case of the absence of current are also given and analyzed . examples of numerical simulation for wave transformation in large estuarine water areas are provided
    文摘:提出了水深与流场缓变水域波浪传播数学模型水流中依赖时间变量并考虑能耗的波浪“缓坡方程”及其等价的控制方程组,分析比较了无水流情况此理论模型与其相应的两种抛物型近似的差别,提供了长江口波浪变形数值模拟计算工程实例.实例表明,该模型能适应河口三角洲大范围水域波浪传播数值计算
  • The river mouth delta process is affected by river dynamics and coastal dynamics . the process of river delta is estimated by empirical model , analytical model and minimum stream power method . the three models are verified with field data of the yellow river mouth . the computed results are compared with field data . the demerits of the three models are pointed out
    采用经验模型、分析模型和最小功率方法研究河口三角洲演变过程.根据黄河河口三角洲资料,利用三个模型计算了河口三角洲岸线或沙咀宽度及岸线的平均延伸情况及对河口近口段河道水位的影响,比较分析了各模型的计算结果,指出了模型不足之处
  • Analyze the yellow river estuary sediment transport and distributing affected factors , utilize the field measured data , based on the hydraulics , river hydrodynamic and statistics fundamental theory , analyze the estuary sediment transport and settling deposition regulation , yellow river estuary gate area sediment deposition mechanism and estuary delta coastline dynamic balance , and some important achievements acquired
    研究报告分析了黄河河口泥沙输移和分布的影响因素,利用实测资料,运用水力学、河流动力学、统计学等基本理论和原理,对河口泥沙输移及其分布规律、黄河河口口门区域泥沙沉积机理以及河口三角洲岸线的动态平衡问题进行了分析探讨,并取得了部分重要认识和进展。
  • After the implementation of water regulation , the river course in delta reaches the minimum ecological flux , and no flow interruption take place ; the runoff flowing into the sea and the transporting sediment increase ; the areas of fresh water wetland is also increased gradually ; species variety get instauration obviously
    结果表明,黄河水量统一调度后,河口三角洲最小河道生态基流在非汛期基本得到满足,断流现象不再发生,径流入海率和输沙入海量有所增加,淡水湿地面积逐渐增多,物种多样性明显得到改善。
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