2元1次方程组\Project1.dpr
............\Project1.dproj
............\Project1.dproj.local
............\Project1.exe
............\Project1.identcache
............\__history\Project1.dpr.~1~
............\.........\Project1.dpr.~2~
............\.........\Project1.dpr.~3~
............\.........\Project1.dpr.~4~
............\.........\Project1.dpr.~5~
............\.........\Project1.dpr.~6~
............\.........\Project1.dpr.~7~
............\__history
2元1次方程组