Since there is no finite element subspace of rotated Q1 finite element space, a special coarse space is used. we prove the condition number of preconditioned problem is optimal.是什么意思_Since there is no finite element subspace of rotated Q1 finite element space, a special coarse space is used. we prove the condition number of preconditioned problem is optimal.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句