m_j(Z,A)=Zm_p+(A-Z)m_n-\alpha_1A+\alpha_2A^{\frac{2}{3}}+\frac{\alpha_3Z^2}{A^{\frac{1}{3}}}+\frac{\alpha_4}{A}(\frac{A}{2}-Z)^2+\delta\alpha_5A^{\frac{-3}{4}}