查询词典 distribution space

According to the definition and the distribution of VSR's voltage space vector, the introduction of a rule-based SVPWM current control strategy, with non-fixed switching frequency and dual hysteresis loops, that obviously improves the performance of current control. Based on two kinds of control strategies of VSR under unbalanced grid condition, the introduction of a new VSR control strategy featuring undamped-oscillation that simplifies the controller structure and effectively improves VSR's performance under unbalanced grid condition. A systematic description of the state switching in trilogic PWM signal generation of threephase CSR by using the conversion between bilogic and trilogic switching functions.

作者在如下工作的基础上对PWM整流器的一些关键问题提出了自己的研究思路、观点和方法：根据PWM整流器网侧矢量关系，直观地描述了其四象限运行的基本原理及特征；定量分析了VSR、CSR的PWM换相过程及波形特征；引入等效变压器模型并详细分析了VSR、CSR基于d—q模型的动、静态特性；提出了满足四象限有功、无功运行指标时的VSR交流侧电感设计方法；并提出了依据控制系统跟随性和抗扰性性能指标设计VSR、CSR直流侧储能元件的参数计算方法；在研究了VSR电流控制策略基础上，提出了影响VSR电流控制的几个要素，并进行了定量分析；根据VSR空间电压矢量的定义及分布，提出了基于规则控制的不定频滞环空间矢量PWM电流控制策略，并由此提出了具有双滞环特性的不定频滞环优化SVPWM电流控制策略，有效地改进了滞环PWM电流控制性能。

According to these mentioned above, it can be concluded that there are 4 types of accumulation model in west slope region, that is, sandstone up-dip trap, structure and structure—lithology trap, fault—lithology trap, sandstone lenticular body trap, and that oil-gas accumulation and distribution are mainly controlled by some factors that is trap growth, relationship of between trap and space orientation of oil-gas migration pathway, connection area of centripetal flow and centrifugal flow, oil-gas preservation condition and unconformability.

在上述基础上，总结出西斜坡区运聚成藏模式主要有砂岩上倾尖灭圈闭油气运聚成藏模式、构造及构造-岩性圈闭油气运聚成藏模式、断层-岩性圈闭油气运聚成藏模式、砂岩透镜体圈闭油气运聚成藏模式4 种模式。在上述基础上，总结出油气成藏与分布主要受圈闭发育、圈闭与油气运移路径空间位置关系、向心流与离心流交汇区、油气保存条件和不整合因素的控制。

Including international multimodal transportation, canvassing, space booking, warehousing and storage, chartering air flight, transshipment, container stuffing/unstuffing, packing, receiving and delivering, distribution, relevant short distance trucking.

建立和管理报关业务团队。5。工作积极主动、思维严谨，有良好的协调沟通及团队合作精神，有诚意与公司长期发展。7。有较强的领导管理能力。广州市鸿顺国际货运有限公司是一家专门从事国际货物运输的专业公司。

Including international multimodal transportation, canvassing, space booking, warehousing and storage, chartering air flight, transshipment, container stuffing/unstuffing, packing, receiving and delivering, distribution, relevant short distance trucking.

承办空运、陆运、海运进出口货物的国际运输代理业务，包括：国际多式联运、揽货、订舱、仓储、包机、中转、集装箱拼装拆箱、货物的包装、接交、分拨、代理短途运输服务、结算运杂费、报验、报检及相关咨询业务。

The calculated and experimental results show unsymmetrical space distribution.

计算与实验结果显示，在瞬态换流过程中，环路周围的磁场呈不均匀分布。

The first major achievement is obtained with the estabilishment of the state-space method used for 3-D flutter analysis of bridge structures, which works out a solution suitable to many complicated situations, such as ununiform distribution of wind speed field, complex types of the structural systems and different cross sections of decks.

所建立的桥梁颤振分析的状态空间法，不仅通用性强，可以考虑风速场是非均匀的，结构本身是非直线状的，结构单元是多样的等复杂情况，而且计算工作量少，并能提供在整个亚临界区直至临界区结构动力特性随风速而变化的信息。

This distortion measure can reflect the different validness of each dimension with different distribution in feature space,so that it can not only improve the speaker recognition system performance but also enhance the system time robustness.

由于不同分布的各维参数对话者识别的有效性各不相同，因此，文章提出了一种能反映这种有效性差别的失真测度，即：方差归一化失真测度。

The fractured-vuggy reservoir of buried hill has special storage space and reservoir characteristics. The interpretation of fracture and vuggy saturation, the determination of effective thickness and the distribution of reservoir are the main problems in reserve calculation.

缝洞型潜山油藏具有特殊的储集类型和特征，其饱和度参数解释、有效厚度划分、储层平面分布的确定是储量计算中的难题。

The main research fields include:（1）Global and regional crustal movement;（2）Interior structure of the Earth and the interactions among geo-spheres;（3）Mass distribution and wavement of the Earth's system;（4）Application of geodesy in space technology and the construction of national projects;（5）Monitoring and evaluating the environment and natural hazards and evolution and restoration of the wetland ecosystem in the middle reaches of Yangtze River by using '3S' techniques.

研究所主要从事大地测量学、地球物理学与环境科学相关重要科学问题研究，包括地球局部和整体运动、地球内部结构及圈层相互作用、地球系统的质量分布和迁移、大地测量在空间技术和国家大型工程建设中的应用、长江中游地区环境与灾害监测评估和湿地演化与修复等方面。

Physical property: The physical property data of the mesh show the distribution of simulated physical quantities in the multi-dimension space. It can be defined in mesh nodes or at the center of the mesh unit.

物理属性：网格的物理属性数据给出了模拟物理量在多维空间上的分布，可以定义在网格结点和网格单元中心上。

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