修造WTC
WTC被修造是坚不可摧,承受巨大的风速、多火和均匀喷气机崩溃。 WTC双塔是珠宝在冠并且是110个地板、500,000吨、钢200,000口气和300,000吨钢筋混凝土。 一切关于塔是巨型的,塔用3次工作负担修造了在头脑里。 一个方形的钢外面圆筒以“坚不可摧的”钢核心是它的建筑。 All other tall buildings followed and improved upon the WTC design style, it was the strongest, tallest structure of its day, a significant achievement using only the most high quality steel.
Video Section has more related reportsHelp keep RINF going..Comment on 'Building the WTC' :
Related News:














装货…













