| 词汇 | valency |
| 释义 | valency noun[ C ] uk /ˈveɪ.lən.si/ us /ˈveɪ.lən.si/(alsovalence, uk /ˈveɪ.ləns/ us /ˈveɪ.ləns/) chemistry specialized a measurement that shows the number of hydrogen atoms that can combine with one atom of a particular chemical element to make a compound, used to describe how easily an element can connect in a chemical way with others: 价，原子价，化合价 Zinc has a valency of 2.锌是二价元素。 His theory was that carbon had a combining power (valency) of four or two and a unique capacity for joining itself to other atoms of its own kind. Sodium is useful in a great many compounds as a substitute for one of the two atoms of hydrogen (also valence 1) in a variety of acids. language specialized A verb's valency or valence is the number of noun phrases with which it combines. : Many verbs can have a different valency depending on the meaning in which they are being used. A verb such as "hand", with a subject, an object, and an indirect object, as in "she handed me the plate", has a valency of three. These generic verbs are excellent models for analogy to other verbs of the same valency. Valence is a property of verbs indicating the number of arguments a verb requires to make a clause. Chemistry - general words acceptor aerosol aerosolize allotrope amphiprotic balanced equation chemical equation electrolyte endocrine disruptor endothermic epitaxial epitaxially epitaxy inorganic chemistry ionic bond nonchemical nonelectrolyte nonreactive preatomic reactive You can also find related words, phrases, and synonyms in the topics: Linguistics: grammatical terms Examples of valencyvalency The dependence of a verb's grammatical properties on derivational processes of stem creation is particularly interesting when valency-changing mechanisms are considered cross-linguistically. This density of musical information, as we shall see later, has dramaturgical valency. Above all, the editors stress the need for in-depth typological surveys of each major valency-changing type. The valency of a vertex, or a face, is the number of edges that share that vertex, or that face. By way of balance, it would have been ideal if a similarly general chapter on valency-decreasing mechanisms could have been added to the book. Strong inherent transitive valency and little specific semantics is what turns these verbs into generic, prototypical transitive verbs. It is suggested that facilitation proceeds by analogy on the basis of similarity in semantics and in valency. Vertices or faces with valency = 4 are termed irregular or 'extraordinary'. Although it might again seem possible to consolidate lexical transitivity and surface valency, the properties of impersonals confirm the independence of these notions. This last process is constrained by agreement within nominal chunks and by valency requirements (subcategorization) within verbal phrases. Compared to valency, other aspects of information input seem to be of lesser importance. The same apparatus is applied to dependencies: the relationship between dogs and bark isa subject, which isa valency and predependent and (ultimately) dependent. It assumes a wide definition of valency, covering not only the patterns of verbs, but also those of nouns and adjectives. For example, syntactic valency-changing processes such as causatives and applicatives are difficult to analyse as purely lexical phenomena. They do not really increase the valency. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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