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建筑物向内折叠倒塌方案
这个方案是让楼房中间部分首先炸塌,周围部分随后向已倒塌的中间部分合拢而实现全部倒塌。这个方案实际上是原地坍塌与定向倾倒的结合,参见 building inward folded method
expl.
inward folded collapse method
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