ballistic transistor

例句：

1. 1. The ballistics expert analyzed the trajectory of the projectile.
   弹道学专家分析了弹丸的轨迹。
2. 2.The ballistics expert explained the principles behind the projectile's trajectory.
   弹道学专家解释了弹丸轨迹背后的原理。
3. 3. The ballistics expert conducted a study on the impact of ballistic missiles on the environment.
   弹道学专家对弹道导弹对环境的影响进行了研究。