ballistic constant

例句：

1. 1.The ballistic constant of the projectile is a critical factor in determining its trajectory.
   弹丸的弹道常数是决定其轨迹的关键因素。
2. 2. The ballistic constant of the projectile was determined by measuring its velocity and angle of flight.
   通过测量弹丸的速度和飞行角度来确定弹丸的弹道常数。
3. 3. The ballistic constant of the projectile was used to calculate the time it would take to reach the target.
   弹丸的弹道常数被用来计算到达目标所需的时间。