directional

英 [dəˈrekʃənl]

美 [dəˈrekʃənl]

adj.  (发出或接收信号、声音等)定向的，指向的; 方向的

BNC.15082 / COCA.15237

牛津词典

adj.

• （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
• 方向的
  connected with the direction in which sth is moving
  1. directional stability
     方向稳定性

柯林斯词典

• ADJ-GRADED (天线、扩音器等)定向的
  If something such as a radio aerial, microphone, or loudspeaker isdirectional, 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。
• ADJ 方向的;指向的
  Directionalmeans 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。

英英释义

adj

• 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
• relating to or indicating directions in space
  1. a directional microphone
• relating to direction toward a (nonspatial) goal
  1. he tried to explain the directional trends of modern science

双语例句

• 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。
• 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。
• Dish aerials are highly directional
  碟形卫星天线的定向性非常强。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。