AN ENGINEERING CALCULATION MODEL FOR THE DEPTH OF PENETRATION OF A PROJECTILE IN STEEL FIBER REINFORCED CONCRETE EMBEDDED WITH STEEL SPHERES是什么意思_AN ENGINEERING CALCULATION MODEL FOR THE DEPTH OF PENETRATION OF A PROJECTILE IN STEEL FIBER REINFORCED CONCRETE EMBEDDED WITH STEEL SPHERES在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句