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| 建筑物定向拆除方案当被拆除楼房的周围场地在一个方向上有较为开阔的场地，其楼房边界至场地边界的水平距离大于楼房2/3 directional3/4高度时，就可采用定向倾倒方案,即使建筑物沿着预定的方向倒塌 | |||
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directional blasting demolition of buildings : 2 phrases in 1 subject |
| Explosives and Explosive Ordnance Disposal | 2 |
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