Through dynamic force condensing, the dynamic matrix of mega-frame is simplified, and corresponding oscillatory differential equation is obtained.
并对在该模型下建立的动力矩阵用动力凝聚法进行简化，推导了相应的振动微分方程。
2
In this dissertation, the keystone of Differential Interference Contrast Microscope is analyzed, and the optics and machine frame of Microscope is illuminated briefly.
本文首先详细分析了微分干涉相衬显微镜的光学系统原理，然后对显微镜光机结构做了简要分析。
3
The experiment shows that the stability of average background method is stronger than framedifferential method.