The newly developed rarefaction wave gun(RAVEN) can achieve low recoil momentum without decreasing the muzzle velocity of the projectile by means of delayed venting the breech.是什么意思_The newly developed rarefaction wave gun(RAVEN) can achieve low recoil momentum without decreasing the muzzle velocity of the projectile by means of delayed venting the breech.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句