计算球形壳层纳米颗粒的散射问题，包括散射系数矩阵，消光系数，吸收系数等。源程序用Matlab编写，方便学习调试-Calculate the scattering of spherical shell nanoparticles, including the scattering coefficient matrix, extinction coefficient, absorption coefficient. Source code written using Matlab to facili

matlab code for tube count determination shell and tube heat exchanger..remain part will be uploaded