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。
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。
The experiment shows that the stability of average background method is stronger than frame differential method.
实验表明，平均背景法的稳定性要优于帧间差分法。
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