Word · Frequency #13194
equivalences
相等；等价；等值
equivalences is the plural of equivalence.
The condition of being equal in value, amount, meaning, or importance.
- 1.
The condition of being equivalent or essentially equal.
等价或基本相等的状态。
- 2.
An equivalence relation; ≡; ~
等价关系；≡；~
- 3.
The relationship between two propositions that are either both true or both false.
两个命题同真或同假的关系；逻辑等价。
- 4.
The quantity of the combining power of an atom, expressed in hydrogen units; the number of hydrogen atoms can combine with, or be exchanged for; valency.
原子化合力的量,以氢为单位；可与一个原子化合或被置换的氢原子数；化合价。
- 5.
A Boolean operation that is TRUE when both input variables are TRUE or both input variables are FALSE, but otherwise FALSE; the XNOR function.
一种布尔运算,当两个输入变量同时为真或同时为假时结果为真,否则为假；即同或函数。
- 6.
A number in intersection theory. A positive-dimensional variety sometimes behaves formally as if it were a finite number of points; this number is its equivalence.
相交理论中的数；正维簇有时形式上等同于有限个点,该数即为其等价数。
- 7.
The degree to which a term or text in one language is semantically similar to its translated counterpart.
一种语言中的术语或文本与其译文的语义相似程度。
逻辑等价；同或；等价关系；化合价；原子价；对等；等值；相交理论中的等价
In use
The equivalence of the two mathematical expressions was confirmed by the proof.
In economics, the equivalence of goods is often measured by their exchange value.
The equivalence between the two chemical compounds means they can be used interchangeably.
equivalence of X and Y
The equivalence of mass and energy is a cornerstone of relativity.
质量与能量的等价性是相对论的基石。
equivalence between X and Y
There is a clear equivalence between the two theories.
这两种理论之间有明显的等价性。
the equivalence of X to Y
当强调对应关系时，常用'of...to...'结构。
Connections
Collocations
- equivalence relation
- 等价关系
- An equivalence relation is reflexive, symmetric, and transitive.等价关系具有自反性、对称性和传递性。
- logical equivalence
- 逻辑等价
- Logical equivalence means two propositions always have the same truth value.逻辑等价意味着两个命题的真值总是相同。
- equivalence class
- 等价类
- Each equivalence class contains all elements related to a given element.每个等价类都包含与某个给定元素相关的所有元素。
- equivalence principle
- 等效原理
- The equivalence principle is a central idea in general relativity.等效原理是广义相对论的核心思想。
- false equivalence
- 错误等同
- The article was criticized for drawing a false equivalence between the two scandals.这篇文章因将这两个丑闻错误地等同起来而受到批评。
Learner notes
Memory Tip
把 equivalence 拆成 equi（相等）+ valence（价值），想象天平两端价值完全相等，即“等价/相等”。
Context & Register
语域：formal 常见场景：academic writing、formal reports、professional discussions equivalence 多用于正式或书面场合，常见于学术论文、正式报告和专业讨论，日常口语中较少使用。
Grammar Note
通常不可数，但在特定语境下可数，如不同等价关系。
Pronunciation & Spelling
完全押韵：ambivalence (/æmˈbɪvələns/)。形近但发音不同：prevalence (/ˈprɛvələns/)、valence (/ˈveɪləns/)、violence (/ˈvaɪələns/)——拼写结尾相似，但重音或元音不同，不押韵。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.