density

C1 CET-4 Oxf 5000 大学 FREQ #14894 ★☆☆☆☆

n. 密度 [化] 密度

发音

UK /ˈdɛn.sɪ.ti/
其它
UK /ˈdɛn.sə.ti/
US /ˈdɛn.sə.ti/
US /ˈdɛn.sə.ɾi/

词形变化

densities 复数 densities

教材释义与例句

名词

密度

释义与例句

n. C1 Oxf 5000
  1. 1.

    The amount of a certain phenomenon (such as stuff, things, energy, or otherwise) in a given area (surface area) or volume (amount of space).

    A measure of the mass of matter contained by a unit volume.

    密度

    可数 不可数 物理
  2. 2.

    The amount of a certain phenomenon (such as stuff, things, energy, or otherwise) in a given area (surface area) or volume (amount of space).

    The ratio of one quantity, representing something of interest, to another quantity representing space, area, or extent in which the thing of interest is distributed.

    可数 不可数

    The number of particles per unit volume of a specified volume can be considered to be the particle density for the specified volume.

  3. 3.

    The probability that an outcome will fall into a given range, per unit of that range; the relative likelihood of possible values of a continuous random variable.

    密度

    可数 不可数 数学
  4. 4.

    Stupidity.

    可数 不可数

    There's only so much density that pedagogy can penetrate.

词汇关系

名词

同义词 4

concentration tightness denseness compactness

上位词 2

spacing compactness

下位词 7

rarity flux absorbance bpi flux density relative density tenuity

相关短语

density of light density dependence density function [计] 密度函数 [化] 密度函数 density functions density dependences density matrix [化] 密度矩阵 density matrices probability density function [化] 概率密度函数 probability density functions pyroclastic density current spin-density wave vapour density 蒸汽密度 relative density [化] 相对密度 population density [法] 人口密度 charge density [化] 电荷密度

词源

Borrowed from Middle French densité or Latin densitas. Morphologically dense + -ity.

来源：wiktionary