With the LU decomposition of the block tridiagonal matrix, an explicit expression of the block inverse elements is obtained.
由块三对角矩阵的LU分解，得到了其逆矩阵块元素的显式表达式。
Hull curved block spatial scheduling problem was divided into a series of block sequencing problems and block packing problems by means of decomposition strategy.
基于分解策略，将船体曲面分段空间调度问题划分为一系列分段排序和分段填空过程。
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