城市生活垃圾处理过程中的各种筛分设备，如振动筛、格筛、滚筒筛等均可视作是二进制的分离设备。
Various screening equipments used in city garbage process, such as vibratory screen, grid and roller screen, can be classified as binary separating equipment.
基于拉格朗日法建立振动筛系统动力学模型，分析出了该系统的固有频率、主振型及系统的响应。
Based on Lagrange dynamics model of vibration machinery system is established. Natural frequency, vibration model and systemic response are worked out.
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