相移分析

The performances of noise jamming, pulse jamming, shift-frequency jamming, range pull off jamming on pulse compression radar signals are analyzed in this paper, which include the linear frequency modulation signal, the binary phase-coded signal and the compound signal of LFM and BC.

针对线性调频信号，二相编码信号以及由线性调频信号和二相编码信号构成的混合信号这几种脉冲压缩雷达信号，分析了噪声干扰、脉冲干扰、移频干扰和距离拖引干扰对它们的干扰性能，并给出了仿真模型和仿真结果

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。

A novel phase-shifted zero-voltage and zero-current switching PWM DC/DC full-bridge converter is presented in this thesis, which is based on the groundwork of summarization of the development of Power Electronics in recent years and lucubration in theoretical basis of modern high frequency soft switching power convert technique and analysis of operation principle, characteristic of the circuit and inherent drawbacks of the traditional phase-shifted zero-voltage switching PWM DC/DC full-bridge con...

本文在对近年来电力电子学科的发展高度综述和对现代高频软开关功率变换技术理论基础深入研究的基础上，对传统的移相控制ZVS PWM DC／DC全桥变换器的工作原理、电路特性、存在的缺点进行了分析，在此基础上提出了一种改进型的移相控制ZVZCS PWM DC／DC全桥变换器。

It is stressed that the fluid-inclusion petrographical analysis is a direct and effective technique for studying petroleum accumulation,as it can provides many information,such as the petroleum migration,the migration stages,paragenesis,contributions of petroleum accumulation in v...

强调流体包裹体岩相分析是直观而有效的分析技术，其结果可以提供油气是否运移、运移期次、相对早晚及每一期相对数量和油气大致特征等资料，也是其他有关包裹体研究的基础。

Comparing with the results of the relative slipping boundary condition and the boundary condition related to constitutive...

结合相对滑移边界条件及与本构关系相联系的滑移边界条件进行对比分析，得到了不同滑移参数间的解析关系式。

Kinds and selecting principle of phase shifter of the key devices in television receiving system of autotrackinging synchronous telecommunication satellite are analyzed. Transcendental equation of the propagation constant of latching ferrite phase shifter is derived, its properties are discussed.

分析了自动跟踪同步通信卫星电视接收系统中的关键元件移相器的分类及选取原则，推导了锁式铁氧体移相器传播常数的超越方程，并对它进行了详细地讨论。

Based on theories of multiphase fluid mechanics and mine ventilation theories,the model of drivage tunnel was established by using the method of similar experiment,the characteristics of ventilating current and gas concentration distribution in drivage tunnel were studied by the experiment,and based on the above characteristics the flow characteristics of gas transportation multiphase flow field were majorly analyzed.

基于多相流及矿井通风理论，利用相似性实验方法，搭建了煤矿掘进巷道模型，并通过模型实验获得了掘进巷道内风流流场和瓦斯浓度分布场的特征信息。结合上述两方面的特征信息重点分析了巷道内瓦斯运移多相流场的流动特性，所采用方法对于矿井通风系统及瓦斯监测系统的设计具有较强指导意义。

On the basis of solute transport theory, the coal gangue eluviated in Xinqiu in Fuxin coal miming area was studied for the pollution of groundwater. The mechanism of coal gangue eluviated in the aquifer was analyzed. A coupled numerical model was developed with convection、sorption and dissolve、disintegration for simulating the leachate transport in groundwater. The model was discreted by using a Gelarkin finite-element method and a Picard iteration scheme, and the process of coal gangue leachate was presented, which predict the temporal and spatial distribution features of contaminant concentration. The result indicates that the contaminated plume is continually extended as time increases, and the vertical diffusion is more abvious.

以溶质运移理论为基础，针对阜新市新邱露天煤矿煤矸石淋滤液对地下水污染实际情况，分析了煤矸石渗滤液在含水层中运移的规律，在综合考虑对流扩散、吸附解吸、生物降解条件下建立了淋滤液在地下水中运移的耦合动力学数学模型，采用Galerkin有限元方法和Picard迭代法相结合对耦合模型进行了离散，模拟了淋溶液对地下水污染的动态过程，预测了污染浓度的时空分布特征，并结合实际观测数据进行对比。

Based on the comprehensive analysis of second-order effect of sway and no-sway frame, the ultimate curvature adopted in the column's eccentricity curvature formula is not corresponding to the flame sway moment caused by the P-Δ effect in Europe and Our country's RC structure code.

在对&有侧移&和&无侧移&框架二阶效应规律进行了较充分、较全面分析的基础上，首先明确指出了欧共体国家和我国混凝土结构设计多年来使用的柱偏心距曲率表达法在&有侧移&框架情况下存在的最大问题是所采用的&极限曲率&与实际形成P-Δ效应的引起框架侧移的截面弯矩不相呼应。

Based on the analysis of the force of wet solid on the non-submerging roller screen,the single solid conveyance model is built,and the throwing coefficient,conveyance velocity of non-submerging roller screen and their calculating methods are given.

通过湿固相颗粒在筒式筛网上的非淹没区受力情况分析，建立了其单颗粒运移模型，提出了筒式筛网湿颗粒的抛掷指数、抛掷运移速度及计算方法。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。