DEMOLITION OF A SEVEN-STOREYED BUILDING WITH HOLLOW-BRICK AND CONCRETE STRUCTURE BY LONG DELAY INTERVAL BLASTNG AND TWO-DIRECTIONAL COLLAPSING是什么意思_DEMOLITION OF A SEVEN-STOREYED BUILDING WITH HOLLOW-BRICK AND CONCRETE STRUCTURE BY LONG DELAY INTERVAL BLASTNG AND TWO-DIRECTIONAL COLLAPSING在线翻译_英语_读音_用法_例句