For the fall of trajectory and the scatter of projectiles, there is larger error between the true value and the measured data by radar or Sky Screens.
在弹道末端，由于弹道降与弹丸散布的存在，用雷达和天幕靶测速装置测试弹丸飞行速度误差很大。
For the fall of trajectory and the scatter of projectiles, there is larger error between the true value and the measured data by radar or Sky Screens.
在弹道末端，由于弹道降与弹丸散布的存在，用雷达和天幕靶测速装置测试弹丸飞行速度误差很大。
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