波动的

The end of last year to the present, accompanied by large fluctuations in demand, bank acceptance bill discount rates all the way down.

去年年底到现在，在需求大幅波动的陪同下，银行承兑汇票贴现利率一路走低。

Alternating current is a kind of ''.

交流电是一种连续不断来回波动的电流。

Investors are therefore exposed to fluctuations in the base currencies exchange rate.

计算。投资者或需承受有关结算货币兑换率波动的风险。

The reasons for the carboxyl end group fluctuation of bottle grade PET base chips were analysed.

对瓶用基片端羧基波动的原因进行了分析。

Because the current price of food is the most important factor CPI fluctuations.

因为目前食品价格是造成CPI波动的最主要因素。

Cause cupreous price gigantic a fluctuant element is numerous, but pass systems analysis, can forecast trend of cupreous price change well and truly.

造成铜价巨幅波动的因素众多，但通过系统分析，则可较为准确地猜测铜价变化趋势。

First of all, the evolutionary game model of this system is built, according to a population and determinately dynamic function in evolutionary game theory, and quilibrium structure and effect factors of the evolutionary system are analyzed. Next, the evolution quilibrium characteristics of investor behaviors in China's securities market are researched as a demonstration, and the reasons why noise traders become popular in the process of investor behavior evolution are explained, based on its evolutionary mechanism. Moreover, the influences of investor behavior evolution on share market's fluctuation are researched through setting up its noise trade model. When noise traders are dominant in securities market, price discovery function and resource configuration effect are also analyzed. Finally, when noise trade become popular, the shortage of some policies, such as, enlarging institution investor and short sale is explained, and some good suggestions are provided according to former research results.

首先，应用进化博弈论中的单群体确定性模仿者动态方程建立证券投资者行为的进化博弈模型，并对进化系统的均衡结构特征及其影响因素进行分析；其次，根据我国证券市场实际，对我国证券投资者行为进化的均衡结构进行实证分析，并从投资者行为进化的角度，解释我国证券投资者行为进化为噪声交易主导市场的原因；然后，通过建立股市波动的噪声交易模型，研究投资者行为的进化对股市波动的影响，并进一步分析我国噪声交易主导市场时对市场价格发现和资源配置功能的影响；最后，根据理论及实证的研究成果，分析噪声交易主导市场时大力发展机构投资者等制度作用的有限性，并进一步提出我国证券市场相机治理的政策建议。

In view of the peaked and fat-tailed characteristics of financial return data distribution and its effect of clustering fluctuation and especially the "leverage effect" of fluctuation on VaR estimates and some efficiencies when estimating VaR with various assumptions of return data distribution,a semi-parameter approach based on EGARCH-VaR model is developed.

在综合考虑了金融收益数据分布的尖峰厚尾特征及其波动集群性，尤其是其波动的&杠杆效应&对VaR估计的影响以及各种假定收益率分布在计算风险价值时存在不足的基础上，提出了基于EGARCH-VaR的半参数方法，并且与正态分布和t分布假设下的GARCH模型的VaR计量方法进行比较，通过实证分析，并利用后验测试，表明基于EGARCH-VaR的半参数方法对风险价值的测度优于正态分布和t分布假设下GARCH模型的VaR计量方法。

The clearance cause more serious effect on the response of turret than that of the rotary table. This result agrees with the experimental response of roller gear indexing cam mechanism. In addition, some problems, such as the impacts on mechanism with clearance, effect on response for preload, effect for inertia of rotary table and stiffness of output-shaft, effect on wave of velocity and torsion for motor characteristic, and so on are investigated.

通过对扭转动力学模型的计算还对以下问题进行了研究：间隙造成的横越冲击的表现；预紧的存在对响应的影响；间隙的存在对有廓形误差的凸轮机构的动力学响应的影响；分度盘轴的刚度和载荷盘惯量对含间隙分度凸轮机构响应的影响；电机特性对转速波动和扭矩波动的影响等等。

Through the analysis and contrast between HM core and Dh core, combined with the data of AMS14C, six pollen assemblages were ploted Out. At the mean time, six stages about the vegetation change and climate fluctuation were rebuild. In addition, there were three sub-assemblages ploted out in the Atlantic period, Sub-Boreal period and Sub-Atlantic period, which reflected the less vibration of the large-scale climatic change. Pollen assemblage dominated by Concentricystes in the hard and green clay of late Pleistocene can make it sure that the hard green clay layer was formed by water.

通过对上海地区鹤鸣孔和东海1井两个钻孔进行孢粉分析鉴定和对比，结合AMS14C测年等资料，划分出了6个孢粉组合带，恢复了本区的植被演化和气候波动的6个阶段，对鹤鸣孔的大西洋期、亚北方期和亚大西洋期各划分出了两个孢粉组合亚带，反应了大气候环境下气候的次一级波动，在晚更新世晚期的硬绿色粘土中还发现了以环纹藻为主的孢粉组合，从孢粉学角度上证实了这一硬绿色粘土层&水成沉积&的观点。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐