给出了直角多边形模块自由度的定义和公式，扩展了最小自由度优先原则，使算法能够处理任意直角多边形模块以及有相对约束的模块。
The definition and formula of flexibility of arbitrary rectilinear blocks are introduced and LFF principles are extended to handle arbitrary rectilinear blocks and blocks with relative constraints.
给出了直角多边形模块自由度的定义和公式，扩展了最小自由度优先原则，使算法能够处理任意直角多边形模块以及有相对约束的模块。
The definition and formula of flexibility of arbitrary rectilinear blocks are introduced and LFF principles are extended to handle arbitrary rectilinear blocks and blocks with relative constraints.
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