By introducing dual variables, the dual governing equations and boundary conditions, which are composed by mixed variables under whole state space, are obtained.
引入对偶变量，进一步建立使问题化为在以混合变量组成的全状态辛空间中的控制正则方程和初边条件。
The state space equations for vibration and stability of composite laminated beams under axial compression have been derived for arbitrary boundary conditions.
建立了组合梁在任意边界条件下振动与稳定性的状态空间控制方程和振动频率与轴压载荷之间的相互关系式。
Field synergy principle is based on the steady state laminar thermal boundary layer integral equations and has been validated by the experimental data and numerical simulations.
场协同原理是基于稳态时层流热边界层的积分方程得到的，其正确性已得到了实验及数值验证。
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