正常光线向各个方向振动垂直的飞行；但是偏振光只有在一个平面上振动。
Regular light vibrates in all directions perpendicular to its direction of travel; polarized light, however, vibrates only in one plane.
通过该方法，只需要进行阶次很低的矩阵和行列式计算即可完成平面连杆机构的振动分析。
Applying this method, we can only require the lower order's calculation of matrix and determinant to make the analysis of vibration for the plane link mechanism.
实现了对杆单元的轴向振动系统、析架系统，平面梁单元的转子系统等上述两类问题的求解。
It has been successfully applied to solve the problems of truss structure system, axial vibration system, rotor system and plane beam system etc.
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