directional

adj.

1. （发出或接收信号、声音等）定向的，指向的
   producing or receiving signals, sound, etc. better in one particular direction
   1. a directional microphone/aerial
      定向传声器 / 天线
2. 方向的
   connected with the direction in which sth is moving
   1. directional stability
      方向稳定性

1. ADJ-GRADED (天线、扩音器等)定向的
   If something such as a radio aerial, microphone, or loudspeaker is directional, it works most effectively in one direction, rather than equally in all directions at once.
   1. Dish aerials are highly directional...
      碟形卫星天线的定向性非常强。
   2. The directional microphone trained on Foresters Cottage could pick up every word uttered inside at several hundred yards.
      对准福雷斯特小屋的定向扩音器在几百码远的地方也能捕捉到里面的人所说的任何一句话。
2. ADJ 方向的;指向的
   Directional means relating to the direction in which something is pointing or going.
   1. Jets of compressed air gave the aircraft lateral and directional stability.
      压缩空气的喷吐使飞机的左右和前后都能保持稳定。

1. Dish aerials are highly directional
   碟形卫星天线的定向性非常强。
2. The directional microphone trained on Foresters Cottage could pick up every word uttered inside at several hundred yards.
   对准福雷斯特小屋的定向扩音器在几百码远的地方也能捕捉到里面的人所说的任何一句话。
3. Jets of compressed air gave the aircraft lateral and directional stability.
   压缩空气的喷吐使飞机的左右和前后都能保持稳定。
4. The length of the fuselage was increased due to a degree of directional instability.
   由于存在某种程度的航向不稳定性，机身被加长了。
5. The research results may also help to improve the fabrication processes of directional turbine blade solidification.
   研究结果对于定向凝固涡轮叶片设计、分析方法的完善和成形工艺的改进具有重要意义。
6. The dispersion and directional array effects of aluminum powders were characterized with high power microscope and spectrophotometer.
   采用高倍显微镜和分光光度计对铝粉的分散和定向排列效果进行了表征。
7. It is a one-way directional control element and can discharge the compressed air in the system rapidly.
   单向型方向控制元件，可将系统中工作过压缩空气快速排放。
8. A brick-structured water tower under complicated environmental conditions was demolished by the use of directional blasting.
   用定向爆破法拆除了处于复杂环境中的一砖砌水塔。
9. The paper presents an ant colony clustering algorithm based on directional similarity: ACCADS.
   提出了一种基于方向相似性度量的蚁群聚类算法。
10. This paper explained the work theory and the process of design about the parallel coupled line directional coupler.
    阐述了平行耦合线定向耦合器的工作原理和设计过程。
11. This paper discussed the horizontal directional drilling trace optimization design in no-dig engineering.
    对非开挖工程中水平定向钻进轨迹最优化设计进行了深入研究。
12. The zero sequence directional relay is an important relay component for transmission line.
    零序功率方向继电器是线路保护中的一个重要元件。
13. Inclination and directional changes can also impact the operability of the artificial lift system.
    倾斜度和方向上的改变同样也会影响人工举升系统的操作。
14. Directional solidification and single crystal will be the development direction of the casting microstructure simulation.
    铸件微观组织模拟研究向定向凝固及单晶方面发展。
15. A cellular automaton model was developed to simulate the primary spacing selection of dendritic array during directional solidification.
    发展了一个元胞自动机模型来模拟定向凝固中枝晶阵列的一次间距选择。
16. Two types of light sources will be considered: Directional and Point lights.
    两种类型的光照我们将要考虑：方向光和点光源。
17. It is fuse-protected and has built-in directional and omnidirectional antennas.
    它有熔断保护功能，并有内置的定向和全方位的天线。
18. Photon efficiencies and forward directional characteristics of X-rays for several kinds of often-used targets were calculated and analyzed.
    对几种靶的光子效率和X射线前向性随靶厚度变化进行了计算和分析。
19. Then, optical directional filtering for the satellite-photograph is performed.
    而后对地面的卫星照片作了光学方向滤波。
20. In the directional well ( horizontal well) drilling meet those difficulties?
    在定向井（水平井）钻井中会遇到那些困难？
21. And that's basically, yes, that's the directional derivative.
    基本上是的，那就是方向导数。
22. Varying tones and intensities provide distinctive directional cues and do not interfere with traditional horns and bells.
    不同音调和强度提供了明显的定向提示而且不会干扰传统的喇叭和铃声。
23. The technique of directional demolition blasting of a tall frame-structured reinforced concrete tower is introduced.
    介绍了高耸框架结构的定向爆破拆除方法。
24. We discuss several different definitions of directional derivative and gradient vector.
    讨论了几种不同的方向导数和梯度的定义。
25. The directional light was a good choice to generate nice, smooth shadows and caustics.
    方向灯时很好的产生漂亮和柔和的阴影和焦散的灯光。
26. Research on Directional Multiresolution Analysis of Images: Theory and Applications
    方向性多分辨率图像分析研究：理论和应用
27. We use the Lagrange variational approach to study the switching characteristics of asymmetric nonlinear directional couplers.
    利用拉格朗日变分法原理，分析了非对称非线性定向耦合器的开关特性。
28. This paper presents a ship detection method combining wavelet analysis and directional filtering for cloudy remote sensing images.
    提出了小波分析和方向滤波相结合的有云遥感图像目标检测方法。
29. It also introduces the main characteristics of the directional drilling graphics display system and its main functions.
    同时介绍了定向钻图形显示系统的特色及主要功能。
30. A method is proposed to detect lag-dependence between linear and directional time series.
    我们建立了一个方法去探测线性与方向性时间序列的分段相依。

adj

1. showing the way by conducting or leading
   1. felt his mother's directing arm around him
   2. the directional role of science on industrial progress

   Synonym:    directingdirectiveguiding

2. relating to or indicating directions in space
   1. a directional microphone

3. relating to direction toward a (nonspatial) goal
   1. he tried to explain the directional trends of modern science