例句與造句

1. Generally such transonic airfoils and also the supersonic airfoils have a low camber to reduce drag divergence.
2. Drag divergence Mach numbers M dd for a given family of propeller airfoils can be approximated by Korn's relation:
3. Because of parasitic drag effects, fighters carrying external weapons stores encounter a vastly increased drag divergence near the speed of sound.
4. The value of the drag divergence Mach number is typically greater than 0.6; therefore it is a supersonic regime above approximately Mach 1.2.
5. A supercritical airfoil is shaped specifically to make the drag divergence Mach number as high as possible, allowing aircraft to fly with relatively lower drag at high subsonic and low transonic speeds.
6. It's difficult to find drag divergence in a sentence. 用drag divergence造句挺難的
7. Since the shocks form when the local air velocity reaches supersonic speeds, there is a certain " critical mach " speed ( or drag divergence mach number ) where this effect becomes noticeable.