It is proved that if the medium is piecewisely homogeneous, the solution of the differential -integral equation satisfies the boundary conditions on boundaries between different media.
证明了在介质为分区均匀的条件下，这个微分-积分方程的解满足不同介质边界面的边界条件。
2
The homogeneous solution of the differentialequation for the shear lag was taken as the displacement pattern of finite segment.
取控制微分方程的齐次解作为梁段的有限元位移模式。
3
Under homogeneous conditions, the application of this equation may give a differential approximation of high order accuracy for Lapace equation, Poisson equation and heat conduction equation.