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 九．一一事件讨论参考资料 |
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According to the video -- bystander - (646 Byte) 2006-9-19 周二, 上午5:08 (128 reads) |
淞岛
加入时间: 2006/06/24
文章: 297
经验值: 52
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WTC’s collapse, partly thanks to economics like you.
Due to economics consideration, the civil buildings are not as strong as military buildings. When they designed WTC, I doubt real strength of the building as the designer clams... It is impossible to test.
As to the collapse speed, NIST has backed down from the initial pancake theory to a more realistic collapse mode including the cone.
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