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

• 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？
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。