A family of symmetric (hybrid) two step sixth P-stable methods for the accurate numerical integration of second order pe......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

以一种基于弹簧-质量系统的主动共振式消声器为研究对象,通过引入相位滞后补偿环节实现控制回路的改进,根据给定消声性能指标确定......

A new instantaneous mobile bed thickness model is presented for sediment transport in skewed asymmetric oscillatory shee......