急!!!!求高手翻译,不要百度出来或是翻译工具的!!! 10
OtherFactorsAffectingtheFlightoftheProjectileSupposethatyouhadagunattheNorthPolewhich...
Other
Factors Affecting the Flight of the Projectile
Suppose that youhad a gun at the North Pole which could fire a projectile far enough to reach atarget fixed at the equator. Because the earth spins on an axis through
the North Pole the gun would be stationary, but the target would be moving at avelocity of about 1000 miles per hour since a fixed point on the equator hasthat velocity due to the earth's rotation. If you aimed the gun at the targetand fired, the target would move several miles during the time the projectileis in flight and the projectile would land where the target had been at theinstant of firing. In order to score a hit it is necessary to "lead"the target, that is, train the gun on the point to which the target will havemoved during the projectile's flight. Projectile and target will arrive at thispoint at the same time. This condition holds true whenever a projectile'strajectory has a north-to-south component, that is, whenever the gun is at adifferent latitude than the target. The effect increases as the north-to-southdistance between gun and target increases. However, a correction is made forthe error introduced by the earth's rotation only on guns larger than 5-inch,since the error is negligible in smaller guns. 展开
Factors Affecting the Flight of the Projectile
Suppose that youhad a gun at the North Pole which could fire a projectile far enough to reach atarget fixed at the equator. Because the earth spins on an axis through
the North Pole the gun would be stationary, but the target would be moving at avelocity of about 1000 miles per hour since a fixed point on the equator hasthat velocity due to the earth's rotation. If you aimed the gun at the targetand fired, the target would move several miles during the time the projectileis in flight and the projectile would land where the target had been at theinstant of firing. In order to score a hit it is necessary to "lead"the target, that is, train the gun on the point to which the target will havemoved during the projectile's flight. Projectile and target will arrive at thispoint at the same time. This condition holds true whenever a projectile'strajectory has a north-to-south component, that is, whenever the gun is at adifferent latitude than the target. The effect increases as the north-to-southdistance between gun and target increases. However, a correction is made forthe error introduced by the earth's rotation only on guns larger than 5-inch,since the error is negligible in smaller guns. 展开
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影响弹丸飞行因素假设你一枪在北极,可以发射远不足以达到固定在赤道目标弹。因为地球的轴上,通过北极枪将固定旋转,但目标将在每小时1000英里的速度移动由于一个固定的点在赤道那么速度由于地球的自转。如果你用枪瞄准目标开火,目标将几英里期间在飞行弹丸的projectileis将土地的目标一直在吃射击。为了命中要“引导”的目标,那就是,火车上的枪指向该目标将已在在弹丸飞行。弹丸和目标将到达这一点在同一时间。这个条件成立时,projectile'strajectory有北,南,组件,当枪是在不同的纬度比目标。效果增加北southdistance枪和目标之间增加。然而,一个改正的误差引入的地球自转只枪大于5英寸的误差是可以忽略的,因为较小的枪。
很辛苦的,望采纳!!
很辛苦的,望采纳!!
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