trajectory peak造句

In the paper , the projectile pushing process on firing is analyzed . the quantitative computational model of the projectile velocity to gun bore wear is built . finally , taking the 120mm gun for example , the relation of projectile velocity to gun bore wear is calculated , the phenomenon of trajectory peak is analyzed
分析了射击时弹丸挤进过程，建立了弹丸初速下降量与炮膛内膛磨损量计算模型，并以某火炮为实例计算了该炮弹丸初速下降量与炮膛内膛磨损量之间变化关系，分析了弹道峰现象，为身管寿命预测提供理论依据。
It's difficult to find trajectory peak in a sentence. 用trajectory peak造句挺难的