Word · Frequency #6863
imaginary
虚数
核心释义
An imaginary number, i.e. a number that can be written as a + bi, where a and b are real numbers and i is the square root of -1.
- 1.
想象；幻想
Imagination; fancy.
- 2.
(数学)形如a+bi的数,a和b为实数,i是-1的平方根
(mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1
- 3.
虚数。
An imaginary number.
- 4.
特定社会群体共同的价值观、制度、法律和象征,以及人们借此想象其社会整体的相应社会。
The set of values, institutions, laws, and symbols common to a particular social group and the corresponding society through which people imagine their social whole.
社会想象；集体想象；想象；幻想；(数学)形如a+bi的数,a和b为实数,i是-1的平方根；虚数。；特定社会群体共同的价值观、制度、法律和象征,以及人们借此想象其社会整体的相应社会。
用法In use
In complex numbers, the real part and the imaginary are combined as a+bi.
用法提示：此处 'imaginary' 为名词，指虚数部分。
The equation has two solutions, one real and one imaginary.
用法提示：'imaginary' 作名词，表示虚数解。
We need to separate the real from the imaginary in this matrix.
用法提示：'imaginary' 指代虚数，与实数相对。
an imaginary
The equation has an imaginary.
这个方程有一个虚数。
the imaginary
The imaginary is often denoted by i.
相关词与表达Connections
搭配Collocations
- imaginary number
- 虚数
- The square root of -1 is an imaginary number.-1的平方根是一个虚数。
- imaginary part
- 虚部
- The imaginary part of the complex number is 3.这个复数的虚部是3。
- imaginary unit
- 虚数单位
- The imaginary unit i is defined as the square root of -1.虚数单位i定义为-1的平方根。
- imaginary axis
- 虚轴
- Points on the imaginary axis correspond to purely imaginary numbers.虚轴上的点对应纯虚数。
- imaginary component
- 虚数分量
学习提示Learner notes
记忆技巧Memory Tip
imaginary中的'image'意为想象，虚数就是想象出来的数。
语境与语域Context & Register
中性，多用于数学教材与学术论文
高价值词汇High-value vocabulary
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
用法优先级Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WORDNET.