短語詞組短語boundary -value singular system 廣義邊值系統(tǒng)constant boundary -value 常邊值neumann boundary -value 第二類邊值riemannian boundary -value riemann邊值elliptic boundary -value problems 橢圓邊值問題analytical function boundary -value 解析函數(shù)邊值 返回 boundary value