directionality是什么意思

用法例句

BEM of the directivity of magnetic dipole antenna;

磁偶极子天线方向性的边界元解法

Analysis and Design Method of a High-directivity Weak-coupling Coaxial Microwave Directional Coupler;

一种高方向性弱耦合同轴耦合器的设计

Against the problems which come along with the fall of the frequency,such as the broadening of the element s acreage,the decrease of the element s number,the reduction of the directivity,a design of a type of half spherical array is offered.

针对中、低频化带来的阵元面积增大、阵元数目减少、基阵方向性相对较差等问题,提出一种半球型自导基阵的设计方案。

Study on the Directionality of Seam Shrinkage in Elastic Crape Satin Plain;

弹力素绉缎缝缩的方向性研究

we discuss the directionality of chatter base on control theory and theory of mechanical vibrations and put forward some measures for adjustment.

切削颤振是机械加工中提高生产率的主要障碍,会降低加工质量和刀具寿命,还会影响机床正常工作及产生噪声,依据控制理论和振动理论对切削颤振中的方向性进行了分析,并提出一些调整措施。

To solve the directionality of spatial magnetic field measurement,two schemes including three-dimensional measurement and simultaneous measurement of transverse,longitudinal components are proposed.

为了解决空间电磁场测量中的方向性问题,提出了三维测量和同时测量横、纵向磁场的两种方案。

Simulation Study on the Orientation of Shear Strength of Rock Structural Plane;

岩石结构面抗剪强度方向性模拟研究

, explains the technical measures of how, during forging processes, to thoroughly smash the carbide particles in Cr12 or Cr12MoV, so as to improve the distributing parity and orientation of carbides, reduces the distributing disparity of carbides, raises the quality of t.

介绍以Cr12、Cr12MoV为材质的冷作模锻坯制作的过程 ,并从模具原材料的要求 ,加热与冷却规范、锻造方法等方面 ,阐述在锻造过程中 ,充分击碎Cr12、Cr12MoV钢中碳化物颗粒 ,改善碳化物分布的均匀性、方向性 ,减少偏析 ,提高锻坯质量的工艺措施。

And the effect of gravity orientation was discussed in this paper.

本文介绍了一套高频同轴脉冲制冷机在低功率输入条件下的性能特性,研究了减弱冷头方向性影响的方法。

Periods and local direction of fingerprint image are the important structure characters.

指纹图像的周期性和局部方向性是指纹图像的重要结构特征,充分利用这两个结构特征是提高指纹增强算法的重要方法。

By using set judgment,in an aim to reject a checking candidate as early as possible; by using sample reduce the computation cost,improve the finesse; by using the direction judgment,improve the efficiency of early stop; thus reducing computational load as much as possible.

本文在传统全搜索算法的基础上,提出一种方向性多层抽样继承排除全搜索算法(DMSSEA)。

Based on hexagonal grid s properties and Bresenham algorithm and the analysis of the properties in adjacency ,semmetry and direction of the straight line, this paper presented a rapid semmetrical line-generation algorithm based on hexagonal grid , it avoided a lot of comparisions and caculation s ,and increase the speed of line generating.

基于六角网格系统的特点,以Bresenham算法为基础,分析了直线的邻接性、对称性和方向性,设计了六角网格的直线对称性生成算法,避免了大量的比较和运算,进一步提高了直线的生成速度。

To provide the detection electrode with directional property as well as to prevent the disturbance from the electric fields in other directions,a local earth-shield detection unit is introduced in the detection system.

普通静电探测极板是全向接收的,为了避免目标周围其它电场的干扰,使探测极板具有方向性,引入了接地局部屏蔽的方案。

To provide the detection electrode with directional property as well as to prevent the disturbance from the electric fields in the other directions, an earth-shield detection unit is introduced in the detection system.

为了避免其它电场的干扰 并使探测极板具有一定的方向性,引入了接地屏蔽的方案,使实现对静电体目标局部静电信息的探测成为可 能。

(5) Diagnoses of basic pointing types and quantitative measurement of directional bias are also absent.

6大问题为:①旅游者个体旅行行为和旅游流的社会群体行为相混淆的问题;②多数研究存在"二元陷阱"现象,将旅游客源地、旅游目的地割裂分别研究;③大多数研究往往将区域界定为仅具有出游(旅游客源地)或入游(旅游目的地)职能,这同"现实中许多区域在不同程度上既是客源地,又是目的地"相矛盾;④尚未辨析区域内部流和区域间流的辨证关系和各自旅游意义,部分研究甚至将区域内部流叠加到区域尺度上的旅游系统分析中;⑤旅游流空间扩散的方向性倾向仍侧重定量描述,方向性倾向的基本指向及其指向类型仍需科学的界定;⑥国内现有研究较少从动态机制上驻足空间扩散,特别是多目的地旅行行为。

Then,directional bias is brought into focus on the spatial diffusion behavior from dynamic perspectives.

借助三角图解法从静态尺度上揭示其空间集中现象,引入统治流分析技术考察其基本空间模式,并借助方向性倾向从动态尺度上考察其空间扩散行为。

multiple unit steerable antenna

多单元方向性可控天线

pencil shape beam radar

锐方向性射束式雷达

horizonally-polarized non-directional antenna

水平极化无方向性天线

To reverse the direction of(an alternating electric current)each half - cycle to produce a unidirectional current.

变换电流方向颠倒每一半周（交流电流的）方向，以产生单方向性电流

Get a compass. People don't follow leaders who lack direction.

掌握方向人们不会去追随缺乏方向性的领导。

Research on Directional Vehicle Dynamics Performance by Ground Monitoring

车辆动力学性能方向性地面监测研究

Broadband technique of fast measuring directional coupler directivity

快速测量定向耦合器方向性的宽带技术

positive tropism.

向刺激方向运动的属性

Aerotropism A TROPISM in which the orientating stimulus is oxygen.

向氧性：一种刺激方向为氧气的向性运动。

Modeling for Multi-directional Magnetic Property of Anisotropic Grain-oriented Silicon Steel

各向异性取向硅钢片的多方向磁性能模拟

electric plane characteristic

电场平面内的方向特性

The alkaline inclination of the local waters.

地方水土的碱性倾向

Marker beds generally diverge basinward on a regional scale.

标志层通常区域性地向盆地方向展布。

made local or oriented locally.

使得具有地方性或者以地方为导向。

The Anisotropic Finite Element Methods for Fourth Order Parabolic Equations;

四阶抛物方程的各向异性有限元方法

Parallel alternating-direction iterative algorithm for solving banded linear equations

带状线性方程组的并行交替方向算法

After cold-rolling of sheet, the basal plane slopes to rolling direction, improving the ductility in this direction.

冷轧后的基面向轧制方向倾斜使该方向的塑性指标得到改善。

Identical in all directions; invariant with respect to direction.

同向性的所有方向上都相同的；就方向上来讲不变的