fired bullet marks 弹头发射痕迹
I was sitting on the floor shivering with fear because a bullet had been fired through a window.
我坐在地板上吓得浑身发抖,因为有一颗子弹射穿窗户打了进来。
But in that case, someone standing on the shore would find that a bullet fired in the direction in which the boat was heading would be travelling faster than one fired in the opposite direction.
但是在那种情况下,站在岸上的人将会发现向船前进的方向发射的子弹将比向反向发射的子弹运动得要快。
Power factor is calculated using the actual bullet weight and the average velocity of the three rounds fired.
利用实际的弹头重量以及射击的三发平均枪口初速来计算威力系数。
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