[计] alternating-direction implicit method

jiāo cuò fāng xiàng yǐn shì fǎ ㄐㄧㄠ ㄘㄨㄛˋ ㄈㄤ ㄒㄧㄤˋ ㄧㄣˇ ㄕˋ ㄈㄚˇ