Based on the internal emission of the medium,the pseudo source adding method is applied to investigate the apparent spectral emission of a semi transparant medium layer with a semi transparent specular surface and an opaque diffuse substrate.

According to the internal thermal emission of the medium,a new method,pseudo source adding method,is presented to analyze the apparent emissivities of semi\|transparent medium layers.

The apparent spectral emission of a semi transparent medium layer with a sine shaped surface was analyzed by the pseudo source adding method.

The instantaneous point source in the solid proliferation solution was obtained with the method transforms with Fourier, also obtains the instant line source and the instant plane source diffusion equation with the point source iteration method in the solid proliferation solution.

Combining the starfield superposition method with dynamic finite element method, a numerical model of blast stress field of linear explosive charge is proposed based on starfield superpositio.

Here the superposition method and creep function of sealed concrete of ACI209 R82 are used in the analysis to fit with the application in engineering.

the reciprocal theorem method (RTM) and the superposition method are extended to deal with a bending thick rectangular plate with four free edges on an elastic foundation under a concentrated load.

For clamped rectangular plates,a superposition method is developed in this paper which is proved to be very effective Based on this method,the solution of transverse free vibrations for clamped rectangular plates on elastic foundations is given in the expression of triangular series.