例句與造句

1. 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
   分析了射擊時(shí)彈丸擠進(jìn)過程，建立了彈丸初速下降量與炮膛內(nèi)膛磨損量計(jì)算模型，并以某火炮為實(shí)例計(jì)算了該炮彈丸初速下降量與炮膛內(nèi)膛磨損量之間變化關(guān)系，分析了彈道峰現(xiàn)象，為身管壽命預(yù)測(cè)提供理論依據(jù)。
2. It's difficult to find trajectory peak in a sentence. 用trajectory peak造句挺難的