查询词典 Model

Its rule of change was obtained.On the basis of other studies,the flocculation kinetics and floes structure was studied. By making some assumptions, collision frequency were presented.Then the the flocculation kinetics model was established through population balance equation. Comparison of experimental data and modeling results indicate that there are the same trend between the two. So the model can predict floes number and size during flocculation of Yellow River's loess particles without using empirical parameters.The TEM and SEM were used to obsever floes in the study of floe structure.The flocculation was divided as flocculi,floc and floe aggregate.The floes structure model was established by assumption that particles position in floe accords with tetrahedron.The fractal dimension of model and experimental floes was found to be coincidentSo the model can reflect the structure of flocs formed in flocculation of Yellow River's loess particles by macromolecule flocculant at a certain extent

最后，本文还对絮凝动力学和絮体结构进行了研究，在前人研究的基础上，针对高分子絮凝黄河泥沙，对絮凝过程作了一些符合试验条件的假设，建立了颗粒碰撞频率表达式，应用了颗粒数量平衡方程，从而建立了絮凝过程的动力学生长模型，模型计算结果与试验数据对比表明，二者趋势一致，在没有使用经验参数的情况下基本上能够描述黄河泥沙絮凝过程中絮体数量和尺寸分布的变化过程；对絮体结构的研究中，应用扫描电子显微镜和透射电子显微镜对絮体进行了观察，将絮体分为絮粒、絮团和絮网三个不同的生长阶段，通过假设颗粒结合位置符西安建筑科技大学博士学位论文合正四面体，建立了絮体结构模型，计算得到的模型絮体分形维数基本与试验中的实际絮体相符，在一定程度上能够反映高分子絮凝黄河泥沙生成的絮体结构。

In Zhongxian Chongqing ,land transfer began to take shape, and made successful exploration of the five kinds of models - lease model, large contracting model peasant model, model generation farming, fruit trees right to operate the subscription model.

重庆忠县率先进行土地流转并初具规模，成功探索了5种模式——公司租赁模式、大户承包模式、农民公司模式、代耕代种模式、果树经营权认购模式。

We firstly summarized some nuclear structure models, and then introduce relativistic mean field theory and its application to spherical nuclei. At Last the characteristics of pseudospin symmetry are researched in details. It briefly includes several following aspects:(1) Some nuclear models such as liquid drop model, Fermi gas model, shell model, project shell model and Bohr model are summarized.

本文首先概述了一些主要的原子核结构模型，然后介绍了相对论平均场理论的建立及其对球形核的描述，最后对赝自旋对称性进行了研究，主要包括以下几个方面：一、概述了已经取得很成功的液滴模型、费米气体模型、壳模型、投影壳模型以及玻尔模型等描述原子核结构的理论模型。

Through studying the math model and "man- plane-environment" operation system model, we analysed the usage range and virtues and defects of transmitting function model of human, optimal con- trol model and fuzzy control model;After analysing "man-plane-environment" operation system, com- puter simulation, we put forward the man- plane -enviroment operation system computer simula- tion evaluation system to determine the best match between pilot and plane.

摘 要：通过对人-飞机-环境模拟仿真技术中人操作者的数学模型及&人-飞机-环境&操纵系统的数学模型的研究，具体分析了人的传递函数模型、最佳控制模型、模糊控制模型的适用范围及优缺点，并在对&人-飞机-环境&操纵系统的数学模型、性能指标进行分析后，提出了确定驾驶员和飞机之间最佳匹配的&人-飞机-环境&操纵系统计算机模拟综合评估系统，从而使人们一开始设计飞机时就考虑驾驶员作用，减少设计盲目性，缩短设计周期。

Based on those analyses and conformed international and national economic condition in china and some intrinsic defects of target zone regime, author transform target zone exchange rate regime by dividing two layers and bring forward a new exchange rate regime: double-layer-monitor exchange rate regime, the new model have possessed two merits, one is that the new model make "hollymoon effect" of target zone recurrence,and the merit can alleviate the fluctuation of exchange market;another merit is that the new model is a self-regulation system, that is say, the model can avoid long-term misalignment of exchange rate, those merit have major significance for china economy sustainable development and Chinese financial system more perfection, in paper we also present some fiscal policy and money policy served as a foil to double-layer-monitor exchange rate regime in order to make it work well, at last, we conclude that the new model will be the prior selection of RMB exchange rate regime reform for a long time form now on, and it also can serve as the bridge of RMB exchange rate regime steering to one of bipolar—free float.

在这些分析的基础上，并考虑到当前中国所面临的国际国内经济环境，针对汇率目标区的一些固有缺陷，笔者又对汇率目标区模型进行了分层改造，提出了一个新的汇率机制模型：汇率目标区双层监控模型，该模型有两个主要优势，一是可以使&蜜月效应&得以重现，从而避免外汇市场的过度波动；二是该模型是一个自稳定系统，能够进行自我调整，使实际汇率同长期均衡汇率保持一致，从而避免实际汇率的长期错位。这些优点对于我国经济的可持续发展，对于我国金融的更加完善，有着十分重要的意义。为使汇率目标区双层监控模型良好运行，论文还就相应配套的财政政策、货币政策措施作了探讨。最后得出结论，按照汇率制度&并存继起&假说，今后很长一段时间内，汇率目标区双层监控模型都将是人民币汇率制度的合意选择，另外，它也可作为人民币汇率制度向独立浮动制过渡的桥梁。

Combustion technology. According to the character of CFB and current research, a steady state model of the flow structure and mixing process in the upper dilute zone of a CFB, where variations in flow parameters with height are neglected,揅ontinuous桪ispersion Model? is presented. The model is based on a two梡hase structure, consisting of an upflowing lean suspension and a downflowing particle clusters. On the basis of this model, a numerical simulation calculation model about flow structure and temperature field is established.

根据循环流化床锅炉特点及国内外的研究开发现状，本文在不考虑沿炉膛高度方向上流动参数变化的情况下，提出了一个描述循环流化床上部稀相区流动结构和混合过程的稳态模型——&连续扩散模型&，即认为床内存在着向上运动的气固悬浮相和低速下降的颗粒絮团相，在此基础上建立了流动结构与温度分布的数值模拟计算模型。

Five suitable load models for the Taipower system are adopted here in order to discuss the effect of the load characteristics on the setting of the overcurrent relay at the time of the incident, as a basis for setting the system coordination:(1) Static ZIP model;(2) Dynamic Motor model;(3) Composite load model;(4) PTI IEEE model;(5) Exponential model.

采用五种适於台电系统之负载模型：(1)静态ZIP模型、(2)动态Motor模型、(3)复合模型、(4)PTI IEEE模型、(5)指数模型，探讨当发生事故时负载特性对过电流电驿设定之影响，以作为系统保护协调设定之依据。

In the research of visual simulation software development, in order to build the software system model and flow analysis algorithm based on Cross-WLF viscosity model, and realize functions such as pre-processor, solver, parameter regress, data management, graph operations, some advanced software methods as OOSE (Object Oriented Software Engineering) and UML were applied to set up user model, static model and dynamic model of MIM simulation software. These models describe system function, event flow, structure and relation of classes, object interaction, structure of database and I/O file format.

在MIM喂料注射成形性能研究方面，针对毛细管流变仪测试法衡量流动性能的不足，提出使用螺旋线模具测试喂料熔体的注射成形性能，创造性地设计了一套可快换浇口，模腔封闭的螺旋测试模，并在螺旋测试模上采用正交实验设计，得出了高密度重合金喂料流动长度L_m的回归公式，揭示了L_m随Q_m、P_m、△T_m和凡的变化规律，并得出工艺参数对成形性能影响的强度顺序为Qm最大，尸m与△几其次，因而改善喂料流动性能应优先控制注射速率Qm。

Based on the long-term monitoring data of post-construction settlement of the loess subgrade of the LanzhouWuwei Line Ⅱ, the quasi consolidation model was set up and contrasted with other models such as the Poisson model, index model, logarithm model and hyperbolic model.

利用兰武二线黄土路基工后沉降的长期观测数据，提出一种新的分析预测模型——似固结模型，并与泊松模型、指数模型、对数模型、双曲线模型的预测结果进行对比分析。

Based on the long-term monitoring data of post-construction settlement of the loess subgrade of the Lanzhou-Wuwei Line Ⅱ,the quasi consolidation model was set up and contrasted with other models such as the Poisson model,index model, logarithm model and hyperbolic model.

利用兰武二线黄土路基工后沉降的长期观测数据，提出一种新的分析预测模型——似固结模型，并与泊松模型、指数模型、对数模型、双曲线模型的预测结果进行对比分析。

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。