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有理数
yǒulǐshù
Description
有理数是数学里的一个词，指可以写成两个整数相除的数。
"有理数" is a term in mathematics referring to numbers that can be expressed as the quotient of two integers.
比如二分之一和三都是有理数。
For example, one-half and three are both "有理数".
Meanings
有理数yǒulǐshù
rational number (in mathematics)
零点五是一个有理数。
0.5 is a rational number.
Related words
Notes
- Etymology
有理 'having ratio' + 数 'number'; a calque of the mathematical term.
- Nuance
contrasts with 无理数 (irrational number); both are subsets of 实数.
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