The tester is the necessary condition for the study, therefore the authors developed the new tester of the digging machine's dynamic mechanical parameters for testing data.

试验装置是进行研究的必备条件，为此作者自行研制了挖坑机动态力学参数室内测试试验装置。

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On the basis of the present methods of compaction testing, the mechanical model of a vibrating roller-soil system was analyzed and its dynamic equation was established.

在现有压实检测技术的基础上，通过分析振动轮土壤系统的力学模型，建立了相应的运动方程。

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Mechanical analysis has been done on driving and reverse driving states, then a vehicle dynamic testing model is developed.

通过对驱动和反拖两种状态的力学分析，建立了汽车动力性检测模型。

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