The equations can be used for the study of any case of a projectile traveling in the bore, such as the cases when bourrelet is always in contact, not in contact, or impinging with the bore.

• 该方程组可用于研究弹丸在挠性渐速膛线身管内的任何运动(定心部不与膛壁接触、弹膛碰撞、贴膛)。