To separate these frequencies, we make a local modification to mass and stiffness of the handle and results in the vibration on the handle of walking tractor to reduce considerably.

为使第二阶模态频率避开发动机一阶惯性力频率，文中对扶手架的质量、刚度进行局部修改，结果使手把振动有较大幅度的下降。

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Structure of the mount model is modified, and stiffness measurement and fatigue durability test were made to the test piece before and after the modification.

对悬置模型进行结构改进，并对改进前、后的试件进行了刚度测量试验和疲劳寿命试验。

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