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第四节爆破作用的简单原理爆破作业中的安全问题是爆破工程中的重要问题,它不仅有发生事故的有害因素,影响安全生产,也有危害工人身体健康的危险因素。我们必须政治挂帅,充分发挥人的
Section IV Simple Principle of Blasting The safety issue in blasting operation is an important issue in blasting engineering. It not only has harmful factors of accident, affects safety in production, but also has danger to the health of workers. We must give top priority to politics and give full play to people