projectile

n.发射体；抛射物（尤指子弹、炮弹）

adj.发射的；向前开进的；〈动物学〉（触角）可伸出的

The vertical and horizontal motions of a projectile can be treated independently. 发射体的垂直方向和水平方向的运动能够分开来处理。

The path followed by a projectile is called its trajectory. 发射体所循的路径称为它的轨道。

The question of the projectile was definitely settled. 炮弹问题已经正式解决了。

Have you altered the plans of the projectile as the telegram suggests? 你已经按照电报的要求修改炮弹图样了吗?

A javelin is a projectile weapon. 标枪是一种投射武器

They also carry projectile rifles with which to shoot at passing vehicles. 他们也携带射弹步枪，用以射向过往的车辆。

弹丸