quintic

例句：

1. 1. The cube of the cube is a quintic number.
   立方的立方是一个五次方数。
2. 2. The quintic polynomial has been studied extensively in mathematics.
   五次多项式在数学中被广泛研究。
3. 3. The quintic equation is a famous example of a cubic equation with three roots.
   五次方程是三次方程有三个根的一个著名例子。