英 [dɪˌrekʃəˈnælɪti] 美 [dəˌrekʃəˈnæləti; daɪˈrekʃəˈnæləti]
n. 定向性，方向性；方向感知
the property of a microphone or antenna of being more sensitive in one direction than in another
同义词： directivity
the property of being directional or maintaining a direction
the directionality of written English is from left to right
方向性-引用次数：24
The MORF not only remains directionality, but also bears orthonormality.
该框架不仅保留了Candes单尺度脊波的方向性,而且具有正交性。
方向特性-引用次数：1
方向性-引用次数：15
Metaphor has some major semantic features,including literal contradiction, fuzziness, systematicity, directionality andinexhaustiveness.
隐喻的一些重要语义特征包括：矛盾性、模糊性、系统 性、方向性和不可穷尽性等。 隐喻的巨大作用主要体现在语言和认知领域。
参考来源论隐喻及其翻译
定向性
（2）高 方向性 （ Directionality ）：意指雷射光有高度的指向性。普通的光源，如常见的灯泡、日光灯管等，其光发散角度都很大，即使光源本身有很高的强度，但向四...
... directive 指示；指令 directionality 定向性，方向性；方向感知 directorship 管理者的职位 ...
4、方向性有差别 LED灯泡还有一点需要了解，那就是directionality(定向性)。如上款云LED灯泡即是指向一个方向照明，而常见的A形灯泡是全方向照明的。
定向性，方向性；方向感知
Figure 3c: [right] Multiple arrowheads clarify directionality.
图3c：[右]表明方向的多个箭头。
MathML2 had no explicit support to control the directionality of layout.
MathML2对于控制布局的方向没有显式的支持。
The directionality and the range of correlation for the water levels were revealed.
揭示了该地区水位的空间结构性—方向性和相关距离。
"There's a bundle of uncooked spaghetti and there's clear directionality to that.
VOA : special.2010.12.08
The nucleotide has a directionality, there's an up and a down to it and it's going to turn out the chain that's formed by polymerizing these has a directionality as well and that's important in defining the structure.
核苷酸有方向性,有上端和下端,核苷酸长链,是由核苷酸沿一个特定方向聚合而成的,这在定义结构时很重要
生物医学工程探索课程节选 : 耶鲁公开课
Synthesis always occurs in one direction and that makes sense to you now because you know there's a directionality and the chemistry is different going one way than the other and this DNA polymerase only works on the chemistry going in one direction.
NA复制过程是单向的,现在你们该明白原因了,因为DNA单链有方向性,DNA在两个方向上化学性质不同,DNA聚合酶,只在一个方向上起作用
生物医学工程探索课程节选 : 耶鲁公开课
KOR-fx features directionality, unlike most sub-woofers, which just pump out bass indiscriminately.
FORBES: CES: Immerz Lets You Literally Feel Videogames And Movies
One added problem will come from directionality of the RF signal from and o the handset, especially when the device is being held in the hand, and near the body(which has natural capacitive effects) that will impede the RF signals.
Here's some more Nintendo Revolution controller pr0n for ya, plus a few more details on how the thing actually works: its main features are going to include 3D pointing, via sensors that pick up the directionality of the controller similarly, it will also be tilt sensitive.
ENGADGET: Nintendo Revolution controller -- more deets, pics