| 释义 |
复数fùshù
1.某些语言中由词的形态变化等表示的属于两个或两个以上的数量。例如英语里book(书,单数)指一本书,books(书,复数)指两本或两本以上的书。{plural form; in some languages, form of a word denoting two or more in number (e.g. in English, ‘books' is the plural of ‘book’)}
2.形如a＋bi的数叫做复数。其中a,b是实数, i2=-1, i是虚数单位。a叫做复数的实部,b叫做复数的虚部。如1-3i, 5i都是复数。{complex number; mathematical expression a＋bi, in which a and b are real numbers, i2=-1, i is an imaginary number; a is called the real part, and b, the imaginary part, e.g. 1-3i and 5i are all complex numbers} |