ماشین Fundamentals Explained
In the event the readily available engine power amplified in the nineteen twenties and 30s and bracing was no longer desired, the unbraced or cantilever monoplane grew to become the most common sort of powered form.مسیر قطار معمولاً از دو ریل پیوسته با فاصله ثابت از هم تشکیل شدهاست که مم�