查询词典 describes

Prepared by officials working under Javier Solana, the EU's foreign-policy supremo, it describes a meeting, late last month, between the Chinese ambassador to the EU, Guan Chengyuan, and a top Eurocrat.

由欧盟外长索拉纳手下官员提供的这份备忘录记述了上个月末中国驻欧盟使团关呈远大使和一位欧共体高官的一次会议。

The solution is an evanescent wave, and in the metal it describes a reflected hole.

体中解是一个渐近於零的波，并且在金属中它描述一反射空穴。

He has to get rid of what Evie describes as the 'social autism' inculcated by his religious upbringing. His mum has been determinedly teaching Ben to drive and things are not good in the parental marriage (but they are God's ambassadors and must show the world a smiling face).

他不得不摆脱由于他所受的宗教教诲导致的、艾维称之为"社交孤僻症"的状况，他母亲决定教他开车，他父母的婚姻也不甚幸福（但他们是上帝的使者，所以必须在人前做出愉快的笑脸）。

With the investigation of the domestic and foreign literature systematically, the bases on the domestic and foreign present research and the comprehensive utilizations of the various knowledge of fluid mechanics in porous medium, reservoir engineering, mathematical physics, perforation completion, numerical simulation and so on, this article takes numerical simulation of gas reservoir of water solubility as the research aim which has completed following research works and obtained the corresponding research results: it analyzes the nature of the Water-soluble gas and formation water as well as the influent factors of the solubility through the study of massive materials; It establishes mathematical models three-dimension, the dual medium, the gas-water phase through the way of finite difference in the migration of water-soluble gas, which describes the entire process of release, migration and production in formation, where it considered the problems of variable bubble point; According to the numerical models of gas reservoir of water solubility it provides solution procedure that based on black oil model; It discovers that there will obtain the good effects in the lowly speed of development through simulation; the reinjection of formation water may largely enhance the produce degree of water-soluble gas when we consider reinjection in simulator; It considered the influence of perforated completion on development so as to increase the simulator"s versatility, It discovers that the simulator may reflect the conditions of development when we exanimate he simulator"s reliability with the empirical datum.

本文以水溶性气藏数值模拟研究为研究目标，在系统调研国内外文献、深入分析国内外研究现状的基础上，综合利用渗流力学、油气藏工程、数学物理方法、射孔完井以及数值模拟理论等多方面的知识，完成了以下研究工作并取得相应的研究成果；①通过对大量的资料调研，分析了水溶气、地层水性质、储层地质性质以及影响气体在水中溶解度的因素。②考虑到由于高压产生的大量水力裂缝，采用有限差分方法建立水溶气运移的三维、双重介质、气-水两相全隐式数学模型，该模型描述了水溶气在地层中的释放、运移和采出的整个过程。③在原有黑油模型的基础上，根据水溶性气藏数值模型编制了该数值模型的求解程序，该程序可以求解单重、双重介质两种情况。④通过模拟不同开采速度对水溶气开发效果的影响，发现开采速度较慢的时候可以取得较好的开采效果。⑤在模拟器中考虑了注水对水溶性气藏开发的影响，地层水回注可以大幅度提高水溶气的采出程度。⑥为增加模拟器的通用性，在模拟器中考虑了射孔完井方式对开采的影响。⑦检验模拟器计算的可靠性，发现在使用实验数据对水溶性气藏进行模拟时，模拟器可以很好的反映气藏开发的状态。

There are totally five chapters in the paper. Chapter 1 is the introduc-tion,and extreme value theory and methods and modelling for returns fat tails are introduced systematically in Chapter 2.This chapter also presents mean excess function and de Haan's moment estimate to decide on the reasonable exceedance threshold. Chapter 3 describes in detail non-linear time series mod-els such as GARCH models and the corresponding statistical inferences,and it also gives modelling and statistical analysis methods for returns series. Chap-ter 4 uses the models in Chapter 2 to analyzes the daily returns for Shanghai complex index and Shenzhen complex index in the Shanghai and Shenzhen stock markets. Chapter 5 applies the models in Chapter 3 to the volatility analysis of the two stock indices returns.

论文总共五章：第一章是引言部分；第二章系统介绍了极值理论方法和收益率厚尾的建模方法，给出了平均剩余函数法和de Haan矩估计相结合的方法确定合理的超越门限；第三章详细论述了非线性时间序列模型GARCH类模型及其统计推断，并且给出了收益率时间序列波动的建模和统计分析方法；第四章利用第二章的模型对国内沪深两市大盘指数上证综指和深证综指日收益率数据分布的厚尾进行了实证分析；第五章将第三章的模型应用到两个股指日收益率时间序列的波动分析。

Describes the key exchange algorithm based on the discrete logarithm problem of elliptic curve over Galois Field.

根据已有的理论结果，本文提出并实现了群上密钥交换安全公钥参数的三类生成算法。

This paper describes a design of the frontal channel of pressure sensor based on feedback and mainly accomplishes the design and manufacture of force generator, electric drive, displacement-measure circuit and the system mechanical structure.It shows out the analysis, debugging of excogitation and the graphics of corresponding objects.

本文着重描述了反馈式力传感器的前向通道设计，主要完成了力发生器及驱动电路、位移检测电路、系统机械结构的设计及制作，并给出了方案的分析和调试及相应的实物图。

This paper describes adesign of the frontal channel of pressure sensor based on feedback and mainly ac complishes the design and manufacture of force generator,electric drive,displacement-measure circuit and the system mechanical structure.It shows out the analysis,debugging of excogitation and the graphics of corresponding objects.

本文着意描述了反馈式力传感器的前向通道设计，主要完成了力发生器及驱动电路、位移检测电路、系统机械结构的设计及建造，并给出了方案的分析和调试及相应的实物图。

The thesis first describes the new traits of technological innovation on the basis of the analysis of innovation pattern, providing the conception and the structure of the enterprise's innovation network. Then,the thesis points out the executant, integration object,basic characteristics, link mechanism and evolvement process of the enterprise's innovation network in order to be helpful to the...

首先从创新模式的发展史中描述了企业技术创新的行为特征，以此提出了企业创新网络的概念和基本机构，并指出了企业创新网络的执行主体、集成对象、基本特征、链接机制和演变过程，以期对企业创新网络的进一步研究有所借鉴。

This paper emphatically describes how to lift its fume exhaust temperature under low load running of a boiler so as to reduce low temperature corrosion .

重点论述了在锅炉低负荷运行状态下提高排烟温度的方法，以达到减少低温腐蚀的目的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。