سلام عزيز،خوبي؟ man be khatere motaleate ziad va talasham dar dars khundan vaghean etelaate khubi raje be bishtare gerayesha daram.baraye inke movafagh beshi vaghean bayad hame gerayesharo balad bashi chon bargh barghe dige in dar kar kardan malum mishe.
tu estekhdama ham 90% migan mohandesie...