He also proposed and discussed the problem of isoperimetric figures.他還提出并討論過(guò)等周問(wèn)題.Based on FEM theory, a program of isoperimetric quadrilateral element is made using MATLAB software.基于有限元理論, 用MATLAB語(yǔ)言編制了四結(jié)點(diǎn)等參元計(jì)算機(jī)程序....