valence

n. 原子价 [化] 化合价; 原子价

发音

UK /ˈveɪl(ə)ns/
UK /ˈvæl(ə)ns/
其它
US /ˈveɪləns/
US /ˈvæləns/

词形变化

valences 复数

别名

valency

释义与例句

n.
  1. 1.

    The combining capacity of an atom, functional group, or radical determined by the number of atoms of hydrogen with which it will unite, or the number of electrons that it will gain, lose, or share when it combines with other atoms, etc.

    化合价

    原子价

    可数 不可数 化学
  2. 2.

    The number of binding sites of a molecule, such as an antibody or antigen.

    化合价

    价

    原子价

    可数 不可数 化学
  3. 3.

    The number of arguments that a verb can have, including its subject, ranging from zero to three or, less commonly, four.

    配价

    可数 语言学 不可数

    In this assignment you will analyze each of the following sentences and determine the valence of the highlighted verb.

  4. 4.

    A one-dimensional value assigned by a person to an object, situation, or state, that can usually be positive (causing a feeling of attraction) or negative (repulsion).

    不可数 心理学 可数

    anger and fear have negative valence

  5. 5.

    The value which a person places on something.

    不可数 可数
  6. 6.

    For a correspondence T on a curve: a number k such that the divisors T(P)+kP are all linearly equivalent.

    可数 不可数 数学
  7. 1.

    Alternative spelling of valance.

词汇关系

名词

同义词 1

valency

上位词 2

power powerfulness

下位词 2

covalence covalency

相关短语

valence shell [化] 价电子层 valence electron [计] 价电子 [化] 价电子 valence band [化] 价带 valence isomer valence issue valence bond [计] 价键 valence electrons [化] 价电子 valence shells [电] 价层 valence bands valence bonds valence isomers valence issues valence window valence windows Marie Valence Hall

词源

Etymology 1, noun sense 1.1 (“combining capacity of an atom”) and etymology 1, noun sense 3 (“one-dimensional value assigned by a person to an object, situation, or state”) are borrowed from German Valenz + English -ence (suffix meaning ‘having the condition or state of’). Valenz is a clipping of Quantivalenz (“(archaic) valence in chemistry”), from English quantivalence, from Latin quantus (“how much”) + English -i- (interfix inserted between morphemes of Latin origin for ease of pronunciation) + Latin valentia (“bodily strength; health; vigour”) (whence Late Middle English valence (“medicinal preparation made from plants”); ultimately from Proto-Indo-European *h₂welh₁- (“to rule; powerful, strong”)). Quantivalence was coined by F. O. Ward who communicated it to the German chemist August Wilhelm von Hofmann (1818–1892), leading him to coin the German word Quantivalenz. Doublet of value. Etymology 1, noun sense 2 (“number of arguments a verb can have”) was formed by analogy to the use of the word in chemistry: see above.

来源：wiktionary