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 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。
• 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。
• 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。
• 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。
• 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。
• And that's basically, yes, that's the directional derivative.
  基本上是的，那就是方向导数。
• 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。
• 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？
• 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。
• 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。