查询词典 wind wave

The main results can beexpressed as follows:(1)Based on πtheory, some affected factors about wave forces are given, and therelation between affected factors and wave forces is analysised by experimentalresults.(2) The distribution of wave press at representative time and reflection nature aregiven and their variety charactes are discussed by experimental results.(3)By comparing the wave forces of quarter-circular breakwater and semi-circularbreakwater under the same wave conditions,some approximately wave forcesexpressions of quarter-circular breakwater are given.(4)Based on VOF method to trace water free surface,solve numerical value ofRANS equation,and get the distributions of flow field and wave press ofquarter-circular breakwater at the same time during one period,the mechanism ofwave force is also discussed elementarily.(5) Based on the result that RANS equation of numerical simulation agree wellwith experimental results,a new approach to study hydraulic natures of quarter-circular breakwater is provided.

其主要结论如下：一、通过π定理，确定影响波浪力的无因次参变量，根据试验结果对其影响因素进行分析；二、基于模型试验，给出典型时刻圆弧面防波堤的同步波压分布和反射特性，讨论它们的变化特点；三、通过相同条件下圆弧面防波堤与半圆型防波堤两种堤型试验波浪力的比较，给出了圆弧面防波堤波浪力的近似方法；四、利用VOF法追踪自由水面，数值求解RANS方程，得到圆弧堤堤体周围的流场和压力场，初步分析了速度涡流与压力场的相互影响；五、对比数值分析与试验结果，探讨数值方法研究圆弧面防波堤水力特性的可行性，提供新的研究途径

The results show that there exist the fast P wave (qP1), fast S wave (qS1), slow S wave(qS2) and slow P wave(qP2) in 3-D dual-phase anisotropic media during the propagation of elastic wave. And the special phenomena such as the S wave splitting, the blind paints of the S wave splitting and wavefront triplication are clearly observed.

结果表明，弹性波在三维双相各向异性介质中传播时存在快纵波qP1、快横波qS1、慢横波qS2和慢纵波qP2，并清楚地观测到了横波分裂、横波分裂盲点、波面三分叉等特殊现象。

The wave is the core problem of low Fr. current .In order to make diffluent piers with low ridge to be popularized and applied, the surface wave of low Fr. current is chosen as the research object .We measure the surface wave elements and the velocity distribution of various diffluent piers scheme by the experiment of physical model. We also analyze the average wave height, the the average value of the square of wave , unit width of the waves energy , the probability density distribution of wave height ,and the power chart character, so as to reveal the weakening wave mechanism of the diffluent piers .

低Fr水流的核心是波浪问题，为了低坎分流墩的推广应用，本研究以低Fr水流的表面波浪作为研究对象，通过物理模型试验，对各种分流墩方案消能工的下游水面波浪要素、流速分布进行测试，分析低坎分流墩下游波浪的平均波高、均方根、单宽波能、波高概率密度分布及功率谱特性变化规律，从而揭示了低坎分流墩的削波机理。

In Wistar rats, latent period of a-wave in scotopic rod response after 1-week transplantation was shorten (P.05); and latent period of a-wave in scotopic rod response after 2-week transplantation was prolonged (P.05); while latent period of b-wave in scotopic maximum response after 1-week transplantation was shorten (P.05). In RCS rats, amplitude of a-wave in scotopic rod response and photopic response after 4-week transplantation was increased (PO.05); while latent period of a-wave in scotopic rod response after 4-week transplantation was shorten (PO.05).Conclusion 1. At the age of 3 months, photoreceptors of the RCS rat degenerated completely, which leaded to the reduction of amplitudes of a-wave and b-wave.

Wstar大鼠术后1周的暗适应视杆反应，a波潜伏期缩短o叼。05）；术后2周的暗适应视杆反应，a波潜伏期延长o功刀5）：术后1周的暗适应最大反应，b波潜伏期缩短o功刀5卜＊CS大鼠术后4周的暗适应视杆反应和明适应反应，a波振幅增大o功刀匀；术后4周的暗适应视杆反应，a波潜伏期缩短o＜0卜结论1、RCS大鼠在3月龄时感光细胞变性死亡，导致FERG的a、b波振幅明显降低；视网膜下腔仍存在感光细胞外节盘膜碎屑，外丛状层缺乏感光细胞的突触末端，同时Muler细胞出现反应性胶质纤维增生。

The main content included in the paper is as follows: The European identification methods of type of wave load is introduced and compared with the methods in Code of Hydrology for Sea Harbour. In order to reveal their difference, they are tested by the experiment data. The relation between phase and frequency are analysed through the Hilbert and wavelet transformations. And a new method of identifying the breaking wave load is set up based on the linear relation between wave height and wave press before the breakwaters. The probability distribution is tested by the statistic of experiment data. Based on the experiment data, the paper analysed the influence of reflection coefficient according to different factors, and its property is got. The work property of charmfered breakwater under breaking waves is analysed. Through the statisticof its wave press and wave force the distribution of press on the breakwater front face and its reducing effect to breaking wave force are proved.

本文基于此，通过实验研究，主要作了如下工作：介绍了欧洲波态划分方法，分析与我国方法的异同，通过实验进行了验证；通过 Hilbert 变换和小波变换对波浪破碎的相频特性进行了分析，通过建立波高与波压关系来判别破碎波浪力；对破波条件下波浪力的分布进行了统计研究，验证了其分布类型；利用实测资料，分析了不同因素对反射系数的影响，得出了不同周期、波浪要素、破碎率下反射系数体现的不同规律；分析了破碎波作用下削角堤的工作特性，通过对堤面所受的波压力和总力的统计分析，验证了压强分布规律及削角堤对波浪力的削减作用。

In section one, by using FICE scheme and TIME-GCM, a model of trace gases and OH airglow affected by gravity wave is set up, then the propagation of nonlinear gravity wave and the effect on trace gases and OH airglow are analyzed. The result shows gravity wave excited by tropospause forcing can propagate stably to the mesosphere through the stratosphere so that energy and momentum can be transferred from one region to another. In this process, gravity wave undergoes growth, overturning, convection and breaking. And the no-isothermal structure can accelerate the breaking of gravity wave in mesospause, and the breaking of gravity wave is an important source of convection and small-scale waves. The propagation of gravity wave will affect the distribution of minor species.

在第一部分的工作中，利用全隐欧拉格式和全球热层-电离层-中间层-电动力学环流耦合模式，对重力波的非线性传播及其在传播过程中对中高层大气中氧族和氢族成分和与之密切相关的OH气辉辐射的影响进行了数值模拟，结果表明，从对流层向上传播的重力波经历了产生、发展、饱和、对流产生直至破碎的非线性演化，大气的非等温结构加速了重力波在中层顶区的破碎，重力波的非线性传播是小尺度对流和湍流产生的一个重要的源。

Gravity wave and ozone are two interesting topics in the middle and upper atmosphere. In this dissertation, they are studied by numerical simulation and instrument development respectively.In section one, by using FICE scheme and TIME-GCM, a model of trace gases and OH airglow affected by gravity wave is set up, then the propagation of nonlinear gravity wave and the effect on trace gases and OH airglow are analyzed. The result shows gravity wave excited by tropospause forcing can propagate stably to the mesosphere through the stratosphere so that energy and momentum can be transferred from one region to another. In this process, gravity wave undergoes growth, overturning, convection and breaking. And the no-isothermal structure can accelerate the breaking of gravity wave in mesospause, and the breaking of gravity wave is an important source of convection and small-scale waves.

中文题名气辉的非线性重力波研究及臭氧总量探测仪的研制副题名外文题名 The study of airglow by nonlinear gravity wave and the development of the total ozone spectrometer 论文作者王咏梅导师刘振兴王英鉴学科专业空间物理学研究领域\研究方向学位级别博士学位授予单位中国科学院空间科学与应用研究中心学位授予日期2003 论文页码总数88页关键词臭氧气辉重力波馆藏号BSLW /2003 /P421 /7 重力波和臭氧是中高层大气中研究的两大热门课题，本文分别从理论模式和仪器研制两方面对它们进行了研究。

In addition to electrostatic ion series fan, wind machine, wind Tsui, wind wand, wind Copper Rods, wind screens, copper, wind serpent, wind drum, surface resistance tester, voltage tester, wrist strap tester, wrist / leg band tester, and so on, may provide a good addition to the electrostatic effect of space and surface electrostatic field has a very good and the elimination of functions.

除静电系列离子风机、风枪、风咀、风棒、风铜棒、风帘、铜棒、风蛇、风鼓、表面电阻测试仪、静电电压测试仪、手腕带测试仪、手腕/脚带测试仪、等等，均可提供良好的除静电效果，对空间及物体表面的静电场有极佳的中和消除功能。

The results showed that soil wind erosion was the near-surface wind-sand activity. The sediment particle saltates mainly in 7.5-43.5 cm. Wind sediment amount decreased along height, which correlate well with power function, exponent function and logarithm function. The sediment particle composition was influenced strongly by wind erosion intensity and topsoil characteristics. However, the regularity of sediment composition was distinct in a definite paticle size in different heights. Wind erosion amount increases with wind speed exponentially, which was influenced by times that the wind does.

结果表明：阴山北麓农牧交错带土壤风蚀是一种近地表的风沙运动，风蚀物跃移颗粒体主要集中在7.5～43.5 cm高度，风蚀物含量沿高度呈一递减函数，对幂函数、指数函数和对数函数均具有较好的相关性；风蚀物颗粒组成与风蚀强度和地表状况关系密切；风蚀物颗粒组成以某一粒径范围、某一高度为界随高度的变化而表现出明显的规律性；风蚀量沿高度的变化与风力作用时间有关，风蚀量随风速的增大呈指数增加。

With the introduction of the history and development of wind power all over the world, the factors that influence the development of wind energy are pointed out. Then several advanced packages for wind power analysis are introduced. In Chapter 2, the principle of wind energy generation is analyzed in detail, while the structure of wind turbine systems is modeled, including the wind model, wind wheel model, the power control strategy, the drive model, etc.

本文主要进行了以下几方面的研究工作：本文首先对我国现有的能源储量和结构进行了统计，阐明能源和环境问题的严重性以及发展可再生能源的必要性；结合国内外风力发电的发展现状指出了影响我国风力发电进一步发展的主要因素，并简要了介绍几种适用于风力发电分析的仿真软件。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。