1
an imaginary
The equation has an imaginary.
这个方程有一个虚数。
虚数
先理解核心含义，再看它在真实句子里的用法。
虚数
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.
The equation has an imaginary.
这个方程有一个虚数。
想象；幻想
Imagination; fancy.
(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
虚数。
An imaginary number.
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.
In complex numbers, the real part and the imaginary are combined as a+bi.
在复数中，实部和虚部组合成 a+bi 的形式。
The equation has two solutions, one real and one imaginary.
这个方程有两个解，一个是实数，一个是虚数。
We need to separate the real from the imaginary in this matrix.
我们需要在这个矩阵中将实数与虚数分开。
The equation has an imaginary.
这个方程有一个虚数。
The imaginary is often denoted by i.
虚数通常用i表示。
Not this
An imaginative number has both real and imaginary parts.
Use this
An imaginary number has both real and imaginary parts.
混淆了'imaginative'（富有想象力的）和'imaginary'（虚数的）。在数学术语中，虚数应为'imaginary number'，而非'imaginative number'。
Not this
The complex number includes a real and an imaginary.
Use this
The complex number includes a real part and an imaginary part.
将'imaginary'单独用作名词时，在数学语境中通常指虚数本身，但这里需要指明'imaginary part'（虚部），以与'real part'（实部）对应。直接用'an imaginary'可能引起歧义。
Choose the next layer that will help you use imaginary with more confidence.
Includes Synonyms & Antonyms
Expand your vocabulary with synonyms and antonyms.
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
虚数
The square root of -1 is an imaginary number.
-1的平方根是一个虚数。
虚部
The imaginary part of the complex number is 3.
这个复数的虚部是3。
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。
虚轴
Points on the imaginary axis correspond to purely imaginary numbers.
虚轴上的点对应纯虚数。
虚数分量
The imaginary component of the signal is zero.
信号的虚数分量为零。
Use imaginary naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
imaginary中的'image'意为想象，虚数就是想象出来的数。
中性，多用于数学教材与学术论文
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WORDNET.