A electron trace modeling program, VBGUN has been finished by VBEM.
利用虚边界元方法，开发了强流电子枪电子轨迹模拟程序VBGUN。
A whole trace-process framework of requirement change is drawn based on three tiers which are propagation & modeling, propagation path, and trace approach of requirement change.
基于需求信息传播与建模、需求变化信息传播路径和需求变化信息跟踪方法三个层面，阐述了软件变化跟踪的整体过程框架；
Methods Similated to duplicate model keys in sameness nipping manner, then observe and summarize the slope angel of profile modeling reamer trace how to change.
方法用铝板制作相同坡长不同齿坡角的钥匙模型，在相同夹持方式下模拟增配过程，观察并总结钥匙上仿形刀痕迹倾斜角度的变化。
应用推荐