The driveline for a tractor vehicle is simplified as a 2-DOFs(degree of freedom)torsional vibration system, and is described as a second-order differential equation.
将牵引车的传动系简化为一个2自由度的扭转振动系统，并以二阶微分方程描述。
This paper presents a basic law of the simplified equation of surface of degree 2, especially the law of the simplified equation of surface of degree 2 with two equal zero roots.
给出一种简便的二次曲面简化方程的基本定理，特别给出二重零特征根二次曲面简化方程的定理。
This paper suggests a dynamics equation of Laser DNA interaction system built on the model of DNA molecular vibrator of 2 degree freedom.
本文将DNA分子作二自由度振子系统近似，建立了激光与DNA相互作用系统的动力学方程。
This paper suggests a dynamics equation of Laser DNA interaction system built on the model of DNA molecular vibrator of 2 degree freedom.
本文将DNA分子作二自由度振子系统近似，建立了激光与DNA相互作用系统的动力学方程。
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