基本解释[數學]neumann邊界值問題英汉例句雙語例句The method of quasi-upper and lower solution for second order Neumann boundary value problems in Banach space;本文利用上、下解方法証明了兩類三堦邊值問題解的存在性和唯一性。neumann boundary-value更多例句专业释义數學neumann邊界值問題