查询词典 direction

Then depended on the Gradient Projection Method, the gradient projection direction is deduced. The gradient direction is the basement for sensitivity analysis.

接着，根据投影梯度法，推导出了投影梯度方向，该方向是灵敏度分析的基础。

The projection gradient method will be a possible way to solve the problem that we just get. It has been shown that the projections of the every directions, of which is the boundary point in linear restraint problems, are the possible decent directions, and the projection of negative grads direction is a decent direction. In 1960, Rosen proposed the basic idea of projection gradient methods, and then lots of researchers have been tried to find the convergence of this method. But most of them get the convergence with the condition to amend the convergence itself.

在约束最优化问题的算法中怎样寻找有效的下降方向是构造算法的重要内容，在寻找下降方向方面可行方向法中的投影梯度法有效的解决了下降方向的寻找问题，利用线性约束问题边界点的任意方向在边界上的投影都是可行方向，而负梯度方向的投影就是一个下降方向。60年代初Rosen提出投影梯度法的基本思想，自从Rosen提出该方法以后，对它的收敛性问题不少人进行了研究，但一般都是对算法作出某些修正后才能证明其收敛的，直到最近对Rosen算法本身的收敛性的证明才予以解决。

The management and quality analysis of the primitive images have been analyzed and studied in this paper, of which the content and structure are as follows:Firstly, the developing background and the meaning of the management and quality analysis of the primitive image, as well as the trends of the management and data quality of the image database studied both in and out of our country, have been discussed in detail.Secondly, the developing direction of the technology of the remote sensing image and the importance of the remote sensing images in the field of economy nowadays have been analyzed systematically. And it is pointed that the primitive image with the elements of interior and exterior orientation will become more and more important as a sort of image production.Thirdly, the hierarchical structure of database, especially the SQL Server adopted in this system, has been deep studied and analyzed in the aspects of Applying Program Interface, Internet Data Connector and ActiveX Data Object.Fourthly, the methods of assessing the quality of the remote sensing image have been put forward in the terms of geometry, construction and the integrality of the assistant information.Fifthly, the model of propagation of errors of the precision of the ground coordinates has been calculated in the steps of inner orientation, spatial resection and answering based on the deep analysis of the principles and processes of inner direction and space resection, which have also been experimented and analyzed in term of numerical value.Finally, the total design and the idiographic realization of the sub-modules have been introduced in detail, based on which the design and development of this system are realized in combination with the program languages such as VB6.0, VC6.0 and SQL.

本文针对原始影像的管理与质量分析进行了深入的研究与探讨，主要内容包括：(1)首先对原始影像管理与质量分析系统的研制背景和意义进行了详细论述，并对影像数据库管理和数据质量研究的国内外动态作了介绍；(2)对遥感影像技术目前的发展趋势以及遥感影像在国民经济生活中的地位进行了深入的分析，并指出附带有内外方位元素的原始影像作为一种影像产品将越来越会引起人们的重视；(3)对数据库的体系结构进行了深入的研究与分析，尤其是对SQL Server数据库的体系结构，从编程接口、Internet数据连接器和ActiveX数据对象三个方面进行了深入剖析；(4)从几何质量、构像质量和附属信息的完整性三个方面提出了对遥感影像质量的评定方法；(5)基于对内定向和空间后方交会原理及过程的深入分析，推导出了从内定向到空间后方交会再到最终求解地面坐标的误差传递模型，并对上述模型进行了数值实验和分析；(6)对原始影像管理与质量分析系统的总体设计和各模块功能的具体实现进行了详细的介绍，并在此基础上联合VB6.0、VC6.0和SQL等编程语言，实现了系统的设计与开发。

The inner toruses represent the nodes at the upper level and the outer toruses represent the nodes at the lower level, which overcomes to some extent the difficulty that the hierarchy expand in the longitudinal direction is not proportionable to that in the latitudinal direction.

CTT通过将层次结构的节点映射到一组同心圆环上，内层圆环表示上层节点，外层圆环表示下层节点，在一定程度上克服了层次结构在横向和纵向扩展的不成比例，并且节点之间的父子关系和兄弟关系都实现了有效的可视化。

According to More Effect,when the Hore component is placed in a gradient field,at the same time the direction of the current is perpendicular to the direction of the voltage,then between the two parallel side face come out the Hore voltage. When Hore component is set in this kind of uni-gradient magnetic field and the electric current is unchanged,the voltage output of Hore component will be proportional to the position of the Hore component in the magnetic field.

根据霍尔效应可知，置于磁场中的霍尔元件若电流方向与磁场方向垂直，则在霍尔元件垂直于磁场和电流方向的两个侧面将产生电势，将霍尔元件置于强度随空间位置线性变化的磁场中，且控制电流恒定，输出就正比于霍尔元件处于磁场中的位置，因此可以用霍尔元件来测量磁场与霍尔元件间的相对位移量。

A pulsator for a washing machine is provided, which comprises: a main body installed on a bottom of the washing tub, and having a fan chamber and a upper surface formed with at least a spout outlet; a spout fan having a fan shaft and a plurality of fan blades extending radially from the fan shaft, the spout fan rotates relative to the main body to eject washing water upwards through the spout outlet; a bearing means for rotatably supporting the fan shaft in a radial direction as well as an axial direction; and means for rotating the spout fan.

一种洗衣机波轮，包括：一个安装在洗衣筒的底部的主体，具有叶轮室以及形成有至少一个喷水出口的上表面；一个具有叶轮轴和多个从叶轮轴沿径向延伸的扇叶的喷水叶轮，该喷水叶轮相对于主体旋转从而产生向上的洗涤水流；可在径向以及轴向上旋转支承叶轮轴的支承部件；以及使喷水叶轮旋转的部件。

"In current markets for example with high volatility and no clear direction a put and a call option on an underlying share will still create volume for the exchange in spite a lack of direction."

"例如，在目前高度不稳定且没有明确方向的市场上，尽管缺乏方向，但某一潜在股票的看涨期权和看跌期权仍会给交易所带来成交量。"

The laser generated ultrasonic pulse method gives the Young′s modulus in the draw and transverse direction,while the pulsed photothermal radiometry method gives the thermal conductivity in the draw,transverse and thickness direction of the film.

应用激光脉冲热致超声法给出材料拉伸方向和横向杨氏模量，应用激光脉冲光热辐射法给出拉伸方向，横向和厚度方向的导热系数。

In a second extended position, the dielectric substrate free end is pivoted away from the radiotelephone in a direction transverse to the longitudinal direction of the housing.

在第二伸出位置时，绝缘基体自由度端部在与壳体纵向横切的方向上从无线电话转离开。

For the principal component, namely the voltage stability analysis function, three kinds of nodal injection power modes are defined, i.e., the random varying direction of load, the response setting direction of generator and the ratio of active power component to reactive power component in load power, and a continuous power flow model that is easy to utilize and comprehend by dispatching center is built, based on this model three kinds of formulae to calculate the sensitivities of loading margin with respect to three kinds of nodal injection power modes are derived respectively, and on this basis the influence of nodal injection power mode on loading margin can be analyzed in order that the voltage collapse can be avoided by fast implementing early warning of voltage stability and adopting effective corrective control.

文章针对N-EMS的主要组成部分--电压稳定分析功能，定义了3类节点注入功率模式：负荷的随机变化方向、发电机的响应设定方向、负荷的有功和无功比例，建立了易于被调度中心运用和理解的连续潮流模型，在此模型基础上分别推导得到负荷裕度对3类模式的灵敏度公式，据此分析节点注入功率模式对负荷裕度的影响，以便能够快速进行电压稳定预警和采取有效的校正控制来避免电压崩溃。

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。