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| 冰中爆破作用装药的最小抵抗线小于临界抵抗线,即爆炸作用只限冰介质内部,不受冰体自由面影响，这种作用称为药包在冰介质爆炸的内部作用。单个球形药包爆炸的内部作用，可在爆源周围形成粉碎区、裂隙区和震动区 | |||
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