摘要
文中提出新的四类非线性常微分方程，借助某些方法与技巧，论证了这几类方程可用积分法求解，获得的结论推广了文献中相应的结果。
From relative references and by use of complex derivation method, this paper puts forthfour kinds of new first - order nonlinear differential equations and discusses their integrality. The conclusions are drawn from results of relative reference.
关键词
非线性
常微分方程
积分法
可积类型
nonlinear differential equation,integral type,derivation method,integration,varible substtution
