Word · Frequency #10973
symmetric
对称的
Having symmetry; balanced and proportioned.
- 1.
Synonym of symmetrical
symmetrical的同义词。
- 2.
Of a relation R on a set S, such that xRy if and only if yRx for all members x and y of S (that is, if the relation holds between any element and a second, it also holds between the second and the first).
集合S上的关系R,使得对于S中所有元素x和y,xRy当且仅当yRx(即若关系在一元素与另一元素之间成立,则在另一元素与该元素之间也成立)。
- 3.
Using the same key (or keys that are trivially related) for both encryption and decryption.
加密和解密使用相同密钥(或彼此简单相关的密钥)。
对称的；对称关系的；对称加密的；symmetrical的同义词。；集合S上的关系R,使得对于S中所有元素x和y,xRy当且仅当yRx(即若关系在一元素与另一元素之间成立,则在另一元素与该元素之间也成立)。；加密和解密使用相同密钥(或彼此简单相关的密钥)。
In use
The design of the building is perfectly symmetric, so both sides look the same.
She drew a symmetric pattern on the card by folding the paper in half.
The two rooms are symmetric in size and shape, which makes the apartment feel balanced.
be symmetric
The design is symmetric.
这个设计是对称的。
symmetric about sth
表示关于某条线或点对称。
The graph is symmetric about the y-axis.
该图形关于y轴对称。
symmetric with respect to sth
也可用 'symmetric in sth'，但较少见。
Connections
Collocations
- symmetric difference
- 对称差
- The symmetric difference of two sets contains the elements in either set but not in both.两个集合的对称差包含属于其中一个集合但不属于两个集合的元素。
- symmetric matrix
- 对称矩阵
- A symmetric matrix is equal to its transpose.对称矩阵等于其转置矩阵。
- symmetric encryption
- 对称加密
- Symmetric encryption uses the same key for both encryption and decryption.对称加密在加密和解密时使用相同的密钥。
- symmetric relation
- 对称关系
- Equality is a symmetric relation: if a equals b, then b equals a.相等是一种对称关系：如果a等于b，那么b等于a。
- symmetric distribution
- 对称分布
- A normal distribution has a symmetric distribution around its mean.正态分布围绕其均值呈对称分布。
Learner notes
Memory Tip
把 symmetric 想成“照镜子”：左右两边一模一样、相互对应，就是“对称的”。
Context & Register
语域：neutral 常见场景：mathematics (relations)、cryptography (keys)、everyday descriptions of shapes 该词语域中性，适用于从日常描述到专业术语的多种场合；在数学和密码学中是固定术语，一般叙述中也与 symmetrical 同义。
Grammar Note
常与介词 about 或 with respect to 连用，表示关于某轴或某点对称。
Pronunciation & Spelling
以上单词都以重读音节 /-mɛtrɪk/ 结尾，与 symmetric 押韵。注意 symmetrical /sɪˈmɛtrɪkəl/ 和 symmetry /ˈsɪmətri/ 拼写相似但发音不同，不构成押韵。
Dictionary facts from ECDICT, WIKTIONARY.