The center conditions and isochronous center conditions for a class of quasi - analytic systems were investigated.
研究了一类拟解析系统的中心条件与等时中心条件。
2
In die design, the pressure center of stamping die is calculated generally using analytic method or schematic method. But these methods are cockamamie, ineffective and fallible.
在模具设计过程中，冲模压力中心通常采用解析法或作图法求解，但这些方法计算繁琐，效率低，易出错。
3
In die design, the pressure center of stamping die is calculated generally using analytic method or schematic method.