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| 预拆除对于钢筋混凝土框架结构，为确保失稳，还需将框架结构的刚度的一部分或全部加以破坏。凡妨碍倾倒的一切梁、柱、板、箍等，必须在主爆之前预先切除，即进行预拆除 | |||
| 预先爆破 | |||
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