短語詞組短語banded d matrix 帶狀矩陣complex symmetric banded Toeplitz matrix 復(fù)對稱帶狀Toeplitz矩陣real symmetric banded matrix 實對稱帶狀矩陣Banded matrix iterative approach 帶狀矩陣迭代法symmetric banded matrix 對稱帶狀矩陣banded matrix algorithm 帶狀矩陣算法symmetrical banded matrix 對稱帶狀矩陣 返回 banded matrix