rational function的用法和樣例：
例句
用作名詞 (n.)
- A rational function is continuous on any finite interval where the denominator is bounded away from zero.
有理函數在任何有限區間上都是連續的，其中分母遠離零值。 - The approximation of differentiable functions by a kind of interpolatory rational functions is discussed,and the corresponding order of approximation is obtained.
討論了一類插值有理函數對可微函數的逼近，得到了相應的逼近階。
