directivity

[计] 指向性, 方向性

词形变化

directivities 复数 directivities

释义与例句

n.
  1. 1.

    A measure of the performance of an antenna compared to an isotropic antenna; the ratio of the maximum value of radiation intensity to the average radiation intensity.

    可数 不可数 商务 工程 物理
  2. 2.

    Anisotropy in the propagation of earthquake waves in the direction of rupture.

    可数 不可数 地质
  3. 3.

    Directionality

    可数 罕用 不可数

    1991, COSPAR. Plenary Meeting, Jean-Louis Fellous, COSPAR., Global change and relevant space observations: proceedings of Symposium 1 of the COSPAR twenty-eighth Plenary Meeting held in The Hague, the Netherlands, 25 June-6 July 1990, Pergamon For higher degrees, the spatial integration tends to produce a cancellation and a rapid loss of visibility, although less rapidly for velocity measurement than for luminosity measurement, on account of the directivity of the velocity vector.

    2014, Oris, Interaction of Information and Energy as the Primary Cause for origination of the Creative Activity of Self-Consciousness Focus and the Macrocosmos in whole, Ayfaar Foundation Inc. →ISBN That is, in order to begin to function synchronously in a new manifestation mode ( to drastically change the vector directivity of the Focus Dynamics), Formo- Creators of billions of particles must “die”:

词汇关系

名词

同义词 2

directionality directiveness

上位词 1

quality

词源

From directive + -ity.

来源：wiktionary