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。

youdao

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。

youdao

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。

youdao