barrel bore造句

• The analysis of the rubbing abrasion and erosion on the barrel bore
  炮管内膛烧蚀磨损现象的分析
• Vibration of tank gun in the process of firing is one of the main factors that affect its firing accuracy , especially the instantaneous angular motion and the instantaneous linear velocity at the point of gun muzzle when the projectile leaves the barrel bore
  影响坦克炮射击精度的主要因素之一是火炮振动，起关键作用的振动分量是在弹丸出炮口瞬间炮口振动角位移和横向线速度。
• The tiny scratches on a bullet as it explodes down a barrel bear distinctive marks for every weapon ; experts can pinpoint which revolver or rifle fired a shot that killed . in recent years , uniformed officers have been issued with . 38 heavy barrel revolvers , a weapon better designed for self - defence against dangerous gunmen
  当子弹经过枪管发生爆炸时，子弹便会刻上细小刮痕，成为个别枪械的独特记号；专家可准确地指出致命的子弹是从那一枝左轮手枪或来福枪发射的。