two-degree-of-freedom system 二自由度体系
two-degrees-of-freedom system 两自由度系统振动控制
two-spring-two-freedom vibration system 二自由度两弹簧振子系统
a two-degree of freedom system 两个自由度系统
two-degree-of-freedom non-linear system 二自由度非线性系统
Then the calculation results of a two-degree-of-freedom System are given by using this method.
然后，本文给出了利用该方法对一个双自由度体系进行计算的结果。
VTOL aircraft is an under-actuated system with three degrees of freedom and two control inputs.
VTOL空间飞行器是具有三个自由度，两个控制输入的欠驱动系统。
The results of computer simulation of a two-rigid-body system with two degrees of freedom of each rigid body show that the method presented in the paper is feasible and effective.
通过一个各有二自由度两刚体系统的计算机仿真识别，结果表明文中所述识别理论和方法是正确和有效的。
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