Not known Factual Statements About قطار
At transonic speeds (close to the pace of seem), it can help to comb the wing backwards or forwards to lessen drag from supersonic shock waves as they begin to sort. The swept wing is just a straight wing swept backwards or forwards.صفحات للمحررين الذين سجَّلوا خروجهم تعلَّم المزيد مساهماتوہ فر