dimensionless

[计] 无量纲的 [化] 无因次的; 无量纲; 无量纲的

释义与例句

adj.
  1. 1.

    Lacking dimensions.

    1930, E. E. Smith, Skylark Three, Fantasy Press, 1948, Chapter 3, They saw the utter, absolute darkness of the complete absence of all light; and upon that indescribable blackness they beheld superimposed the almost unbearable brilliance of enormous suns concentrated into mathematical points, dimensionless.

  2. 2.

    Of a physical constant: lacking units.

    Iron has a density of 7.8 grams per cubic centimeter: its dimensionless relative density is 7.8.

相关短语

dimensionless quantity [计] 无量纲量, 无因次量 dimensionless quantities

词源

Etymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *d(w)is- Proto-Italic *dis- Latin dis- Proto-Indo-European *meh₁- Proto-Italic *mētis Latin mētior Latin dīmētior Proto-Indo-European *-tisder. Proto-Italic *-tjō Latin -tiō Latin dīmēnsiōder. English dimension Proto-Indo-European *lewh₁- Proto-Indo-European *lewHs-der. Proto-Germanic *leusaną Proto-Germanic *lausaz Proto-Germanic *-lausaz Proto-West Germanic *-laus Old English -lēas Middle English -les English -less English dimensionless From dimension + -less.

来源：wiktionary