IJarea-postproc

改程序用于大地电磁法的一维反演，运用波斯蒂克反演方法(Reform program for the one-dimensional inversion of magnetotelluric method, the use of the Persian Mystic inversion method)

说明：  fortran弹塑性分析程序，很有用的啊！(fortran plastic analysis program, very useful)

石墨烯量子态密度计算，采用紧束缚近似以及薛定谔方程，计算态密度(Graphene quantum state density calculated using the tight-binding approximation and the Schrodinger equation to calculate the density of states)

求解任意区域上的二元函数的二重积分，功能强大实用方便！(Solving binary function on any area of ​ ​ the double integral, powerful practical and convenient!)

COMSOL工程案例的英文书籍，亚马逊网站可查，售价不费。(COMSOL project case of English books, Amazon website can be found, the price is not cost.)

frictional model to analysis in abaqus, a good subroutine to build a new frictional relationship

一个柴油机模型，能计算柴油机的油耗率，扭矩(a diesel engine modle)

用吉尔方法积分一阶微分方程组的初值问题。(Gill method with integral equations of first order initial value problem.)

说明：  该算法用于现代武器的弹道曲线中，使一种用的很广的先进算法(the algorithm used modern weapons ballistic curve, a widely used in the advanced algorithm)

上三角或下三角矩阵也有大部份的元素不储存值（为0），我们可以将它们使用一维阵列来储存以节省储存空间，而对称矩阵因为对称于对角线，所以可以视为上三角或下三角矩阵来储存。(Upper or lower triangular matrix or a large majority of elements are not stored value (0), we can use them to store a one-dimensional array in order to save storage space, and because the symmetrical diagonal symmetric matrix, it can be regarded as the or lower triangular matrix storage.)