The air resistance makes influence on the flight of an aeroplane.空气阻力影响飞机飞行.This increases their air - resistance and reduces the shock of impact when they hit the ground.这样就加大了空气阻力,并减少了它们着地时冲击力带来的震动.Engineers will work ...

Haulage distances are not excessively long.拖运距离并不十分远.He developed a mathematical formula describing the distances of the planets from the Sun.他研究出了一个用于计算行星与太阳之间距离的数学公式。As they must also sprint over short distances, speed...

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