平动自由度。
验证了振动势能项将以与平动、振动、转动各自由度一样的权重分配分子能量的理论；
We verify the theory of same weight for distribution in molecular energy about the term of vibrational potential as well as various degrees of freedom of the molecules.
研究了一种三自由度平动并联机器人的机构特点，并在此基础上提出了一种等效的并联机器人运动学仿真方法。
In this paper, a novel equivalent kinematics simulation method of the traditional parallel robot was presented after studying the mechanism characteristics of a three DOF translational parallel robot.
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