The equivalent model has good applicability for strong nonlinear Duffing systems.该等效模型对强非线性杜芬系统具有良好的适用性.This paper deals with analytical approximate solutions to the Duffing - Harmonic oscillator by a new method.用一种新方法研究...
He's a sly old beggar if ever there was one.他确确实实是个老奸巨猾的家伙。The statistics beggar belief.统计数据让人难以置信。Aren't you dressed yet, you lazy beggar?你这个懒汉还没穿好衣服吗?...