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 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。
• 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。
• 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。
• 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。
• 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？
• 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。
• 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。
• 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
• 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。