Calculation of Echo Time of Explosion of Projectile or Warhead is Air and Its Application in Range Test of Fuze Self-destruction Time是什么意思_Calculation of Echo Time of Explosion of Projectile or Warhead is Air and Its Application in Range Test of Fuze Self-destruction Time在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句