projectiles的音标：projectiles的英式发音音标为：[prəd'ʒektaɪlz]projectiles的美式发音音标为：[prəd'ʒektaɪlz]...

n.抛射体( projectile的名词复数 )，（炮弹、子弹等）射弹，（火箭等）自动推进的武器...

These differences are connected with the strong absorption of the composite projectiles.这些差别与复杂的入射粒子的强烈吸收有关.Projectiles became more important because cannons could now fire balls over hundreds or yards.抛射体变得更加重要,因为人们已能用大...