每个子系统称为一个模块。

Each subsystem is called a module.

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每个子系统引入两个新矩阵，协调系统引入一个。

Two new matrices are introduced in each subsystem and one new matrix in coordinating system.

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每个子系统都包含非线性项，且互联项是非线性非匹配的。

Each subsystem contains nonlinear term and the interconnections are nonlinear and unmatched.

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