constant

名词 n. 形容词 adj.
中文释义
英 /ˈkɒnstənt/    美 /ˈkɑnstənt/

英文释义

名词 n.
  1. That which is permanent or invariable.
  2. A quantity that remains at a fixed value throughout a given discussion or operation.
    — We also establish that constants are local extremizers of the Tomas-Stein adjoint restriction inequality as well as of another inequality appearing in the program..
  3. Any property of an experiment, determined numerically, that does not change under given circumstances.
    — Based on their acid dissociation constants (pKa), seleneous^([sic]) acid (H2SeO3) and selenic acid (H2SeO4) are anionic under common environmental conditions [48], e.g., as selenite (SeO32−) and selenate (SeO42−).
  4. An identifier that is bound to an invariant value; a fixed value given a name to aid in readability of source code.
形容词 adj.
  1. Unchanged through time or space; permanent.
  2. Consistently recurring over time; persistent.
    — The constant pinging of electronic devices is driving many people to the end of their tether. Electronic devices not only overload the senses and invade leisure time. They feed on themselves: the more people tweet the more they are rewarded with followers and retweets.
  3. Steady in purpose, action, feeling, etc.
    — Both loving one fair maid, they yet remained constant friends.
    The New Arcadia
  4. Firm; solid; not fluid.
    — If […] you mix them, you may turn these two fluid liquors into a constant body.
  5. Consistent; logical. obsolete
    — I am no more mad than you are: make the trial of it with any constant question.
  6. Bounded above by a constant.
    — constant time   constant space

词形变化

more constant comparative most constant superlative constants plural

词汇关系

近义词
unaltering unvarying
衍生词
constantive constant morphism constantness constant speed drive constant speedism constant-speed propeller constant time constant-velocity constant velocity constant-wear garment multiconstant nonconstant thermoconstant unconstant uniconstant constant of integration absolute constant acid dissociation constant Apéry's constant Archimedes' constant Avogadro constant Avogadro's constant Boltzmann constant Boltzmann's constant Brun's constant Catalan's constant Chaitin's constant Champernowne constant constant function constant problem Conway's constant Copeland-Erdős constant cosmological constant Coulomb's constant de Bruijn-Newman constant decay constant dielectric constant Dirac constant Dirac's constant Einstein constant Einstein's constant equilibrium constant Euler-Mascheroni constant Feigenbaum constant fine structure constant fine-structure constant Fransén-Robinson constant fundamental constant gas constant Gelfond's constant gravitational constant Henry's law constant Hubble constant Hubble's constant Landau-Ramanujan constant lattice constant Legendre's constant Lipschitz constant Lizardman's Constant logical constant Ludolph's constant Madelung constant magic constant Marchetti's constant Napier's constant physical constant Planck constant Planck's constant propagation constant propositional constant Ramanujan's constant rate constant reaction rate constant Rydberg constant screening constant separation constant shielding constant sofa constant solar constant Sommerfeld's constant spring constant Stefan-Boltzmann constant Stieltjes constant symbolic constant time constant Verdet constant
相关词
constantly constancy literal

词源

词源 1
From Middle English constant, from Old French constant, from Latin constantem, accusative of constans, from cōnstāre (“to stand firm”). Displaced native Old English singal.
词源 2
From Middle English constant, from Old French constant, from Latin constantem, accusative of constans, from cōnstāre (“to stand firm”). Displaced native Old English singal.
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