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