采用改进的线性组合符和么正变换方法导出强、弱耦合束缚极化子的振动频率和有效质量。
The vibration frequency and effective mass of strong - and weak-coupling bound polaron was derived by using improved linear combination operator and unitary transformation methods.
由于设计时仅进行了静强度和稳定性计算，而没有进行动力计算，在使用过程中出现了有时振动过大、个别部位刚度弱的问题。
Because only static intensity and stability analysis is considered and dynamic calculation is usually neglected in design, the problems like heavy vibration and local weak rigidity have appeared.
根据弱刚度零件端面切削实验，研究了超声波椭圆振动切削对弱刚度零件的切削效果。
Based on experiments of the face cutting of the weak workpiece, effects of the ultrasonic elliptical vibration cutting on the weak workpiece are researched.
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