a differential system的用法和样例：
例句
- This paper is devoted to the viability of a class of differential inclusion.
摘要讨论了一类微分包含可生存性的判别问题。 - In this paper, we investigate the iterated order and iterated convergence exponent to zero sequence of the solutions of some classes of differential equations.
摘要本文研究了几类微分方程解的迭代增长级及零点迭代收敛指数。
