In this paper, we prove a sufficent and necessa ry condition of existence for the solution of a kind of sublinear singular bound ary value problem.是什么意思_In this paper, we prove a sufficent and necessa ry condition of existence for the solution of a kind of sublinear singular bound ary value problem.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句