中文摘要：

通过建立几个微分不等式将经典的微分方程零点比较定理推广到二阶非线性微分方程，得到若干新的结论．

英文摘要：

In this paper, some differential inequalities are established for a class of second order nonlinear differential equations, and some zero point comparison results are derived by using these inequalities. The results generalize some classical Sturm Comparison Theorems.