To the inverse problem of the system of linear algebraic equations, tiauthor gives a symmetric matrix solution and the expression of its general solution.
本文给出线性代数方程组反问题的对称矩阵解，及其通解表达式。
The general equations of the vibrations of the single cable system have been erected, and the linear theory is used to determine the frequencies and the modes of the cable system.
给出了单悬索系统的振动基本方程，及线性化方法确定系统自由振动的频率与模态方程。
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