说明：  将MATLM3应用于有限差分法的正演计算中．充分发挥了其强大而方便的功能。 通过对二维稳定电流场模型的试算表明，ATLAB在解决实际的工程和数学问题中，与其它计算机程序设计语言 FORTRAN相比，具有使用更为简便、语句功能更强
(Will MATLM3 finite difference method applied to the forward calculation. Give full play to its powerful and convenient features. Through the two-dimensional current field model calculations show that, ATLAB in solving practical engineering and mathematical problems, and other computer programming language FORTRAN, compared with the use of more convenient, more powerful statement)