vale
ncy
复数形式
valencies
1
化合价, 结合能力
(chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent)
同义词：
2
价, 反应能力
(biology) a relative capacity to unite or react or interact as with antigens or a biological substrate
同义词：
3
化合价
the phenomenon of forming chemical bonds
4
配价, valency
the number and types of arguments that a verb can take in a sentence, determining the syntactic and semantic relationships between the verb and its arguments
Valency refers to the capacity of a verb to combine with a specific number of arguments, which can include subjects, objects, or complements. This concept describes how many participants are involved in the action or state expressed by the verb. For example, an intransitive verb like "sleep" has a valency of one, as it only requires a subject, as in "He sleeps." A transitive verb like "eat" has a valency of two, needing both a subject and a direct object, as in "She eats an apple." Some verbs can have a valency of three or more, such as in "He told her a story," where the verb "told" has a subject, a direct object, and an indirect object. Understanding valency is essential for analyzing verb usage and sentence structure, as it helps to clarify the roles that different elements play within a sentence.