《工程中的有限元方法（第3版）》[（美）钱德拉佩特拉，（美）贝莱冈度 著，曾攀 译]书籍中的原代码，入门级代码-" Finite Element Method in Engineering (3rd edition)" [(U.S.) Chandra Petra, (U.S.) Beilai Gang degrees with, had climbed translation] books of the original code, entry-level code