查询词典 directional

My friend to the introduction said that the seashore school takes my city the duplicate holotype school, has output large quantities of talented people to the society, after they graduate, makes the contribution in each post for the economic development, the seashore school teaches students in accordance with their aptitude, enables you to be possible to obtain the omni-directional exercise, but I not too understood to this school, you can make the further introduction again?

提示： 您现在查看的是分类妈妈网关于烟台海滨学校的信息，如果您对我们有什么意见或建议请点击咨询建议让我们做的更好！烟台分类妈妈消息，今天一网民来电咨询关于烟台海滨学校的相关问题，他说："我朋友给介绍说海滨学校作为我市的复全型学校，向社会输出了大批人才，他们毕业后在各个岗位为经济发展作贡献，海滨学校因材施教，让你可以得到全方位的锻炼，可我还是对这所学校不太了解，你们能再作进一步的介绍吗？"

In addition, in Hominoid Ka /Ks ratio for HMGbox seqeunces site in Hominoid (driven by postitive directional selection).

同时，对于HMG盒序列，Ka/Ks比值在人猿超科中也有明显的上升趋势。

Microstructures of the hypereutectic Cu-1.7% Cr alloy and Cu-5.6% Cr alloy during the directional solidification were observed.

考察了Cu-1.7%Cr和Cu-5.6%Cr过共晶合金的定向凝固组织。

It relies on tax collection and management system in order to land and resources-based geographic information system as the carrier, by way of data processing system for rent collection and management of land-use tax information and land departments cadastral information, the taxpayer reporting the information to dynamically match and comprehensive analysis to three-dimensional electronic map shows the streets, the main building and the taxpayer identity information, support bi-directional maps and database query, map identification and taxpayers to provide a variety of state of the display, and information to achieve grid-based management, and network information pass for the "checkerboard" management to provide information support platform.

它以税收征收管理系统为依托，以国土资源部门基础地理信息系统为载体，通过数据处理的方式对地税征管系统中的土地使用税信息与国土部门的地籍信息、纳税人申报信息进行动态比对和综合分析，以三维电子地图显示街道、主要建筑标识及纳税人信息，支持地图与数据库双向查询、提供图上标识和纳税人多种状态的展示，并对信息实现网格化管理和网络信息传递，为"棋盘式"管理提供信息支撑平台。

This paper studies an omni-directional vision system and its imaging model.

对全维视觉系统及其成像模型进行了研究。

Then, incomplete beta function is applied to enhance the image′s global contrast in the low frequency subband, and nonlinear gain function is used to process the coefficients at each scale in the directional bandpass subbands respectively, which suppresses small coefficients and enhances big coefficients by threshold denoising method.

引入非完全贝塔函数对低频子带系数进行处理，提升图像整体对比度；采用非线性增益函数对各带通方向子带系数进行处理，通过估计噪声水平设定阈值，抑制绝对值小于阈值的系数，增强大于阈值的系数。

Based on interval value and its operational properties, directional relation model of indetermined regions is given.

基于区间值模糊集理论，提出了不确定区域间的方位关系模型。

ABSTRACT Aiming at problems of trans-vector controller in a vehicle-carried induction motor such as variable rotor and stator resistance following motor temperature, and their inductance varying with flux saturation degrees. Firstly, CSI and VSI are introduced, for CSI, it can hold the advantages both FOC and DTC using stator flux directional, PI parameter and simulation are also introduced. Secondly, equations of IM in the synchronous rotary frame and its static counterpart, as figuring in the saturation condition of magnetic field, are dealt in this paper and the simulation results are presented. Thereafter, the parameter designing of PI trans-vector controller is processed, which features the non-linear model. In practical realization, as neglecting the dynamical change of motor inductance, this paper employs online modification of inductance parameters, according to the flux saturation, then transforms the non-linear equations into linear ones, and so compacts the structure of controller. Thirdly, in view of the maximum torque output is extraordinary requisite when Electrical Vehicle start up, accelerate, and overtake, this paper issues the maximum torque when both inverter and battery capacity is corporeally definite. Fourthly, on-line differentiating and analyzing both rotor's time constants and its flux by using the expanding order reduction and discrete Kalman filter equation are fathomed, in order to realize high-performance trans-vector algorithm, and also the simulation results are presented. Fifthly, the close-loop regenerative brake system, when the EV's torque is set constant, is deduced; at the same time, unification of electric drive model and brake model is executed. Combined with maximum charge current demands, the mathematical model for online yielding torque as a demand.

本论文针对车载异步电机在矢量控制器所遇到的问题：定转子电阻随温度变化及随电机饱和程度变化的转子电感及定子电感而影响电机调速性能提出一套完整的解决方案：分析了电流型逆变器和电压型逆变器在实现矢量控制时控制器参数的计算，分析出对于电流型逆变器在采用定子磁场定向时，其性能同时具有矢量控制和直接转矩控制两者的优势，并对电压型逆变器在转子磁场定向下的模型进行了仿真研究；建立异步电机非线性模型，推导出考虑磁饱和时异步电机在同步旋转坐标系及静止坐标系下的方程，并做出了仿真结果，建立异步电机在非线性模型下的矢量控制调节器的PI参数设计，在实际应用中，若忽略电机电感的动态变化，可以根据当前的磁路饱和状态而在线修正电感参数，从而将非线性方程线性化，降低控制器的复杂度；考虑到电动汽车在起动和加速超车时需要电机有最大转矩输出，本文讨论在逆变器容量一定和电池供电能力有限的情况下电机最大转矩输出问题；推导了异步电机扩展降阶、离散卡尔曼滤波方程在线辨识转子时间常数和转子磁通，用于实现高性能的矢量控制算法，并给出了仿真结果；推导出了电动汽车恒转矩给定的闭环回馈制动系统，实现了电动控制模型和制动模型的统一，而且结合铅酸电池最大充电电流的要求，为制动转矩在线给定建立了数学模型；设计了基于双DSP系统的高性能矢量控制器软硬件框图，并以大量实验数据说明矢量控制在电动汽车应用的实际应用状况。

Then, with some examples, the problems of directional indicator design for underground space are discussed systematically from angles of space inductive design and indicator sign system.

本文从理论上阐明了地下空间方向诱导设计的必要性，介绍了定位定向的相关理论，然后结合实例，从空间诱导设计和标示系统诱导设计两大方面对地下空间方向诱导设计的问题进行了较为系统的探讨。

Based on general discussion over all available fault-tolerant control methods, we chose linear matrix inequation to do research on robust fault-tolerant control. The result could apply to the control problem of three-axis stabilized directional satellite control system.

在对现有各种容错控制方法进行了综述的基础上，选择线性矩阵不等式方法进行鲁棒容错控制方法研究，得到的结果适用于三轴稳定定向卫星控制系统的容错控制。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。