These are volcanoes so explosive that they burst open in a single big crack.
这些火山爆炸性极强，爆发瞬间出现了一道大裂缝。
The paper analyzes the major dangerous factors in the exploding process according to the sensitivity of explosive, electricity induced early burst and the harmful gas produced in explosion.
该文从炸药的感度、电感应引起早爆、爆炸产生的有害气体等三个方面，分析了爆破过程中的主要不安全因素。
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