1、Determination of Muzzle Velocity Loss by Law of Bore Wear
由炮膛磨損規(guī)律確定火炮初速減退量

2、Study on Assess Ment of Cannon Barrel Life by Muzzle Velocity of Pill
彈丸初速評定火炮身管壽命研究

3、The variation of muzzle velocity with piston weight is increased first, and then decreased.
初速隨活塞質量的變化是先增大而后減少。

muzzle velocity翻譯