dual algebra

例句：

1. 1.Dual algebra is a branch of mathematics that deals with two variables simultaneously.
   双代数是数学的一个分支，它研究两个变量同时出现的情况。
2. 2.In dual algebra, we can use matrices to represent both sides of an equation simultaneously.
   在双代数中，我们可以使用矩阵来同时表示方程的两边。
3. 3.The study of dual algebra has applications in fields such as economics and finance.
   双代数的研究在经济学和金融领域有应用。