The disaster may be caused by unstable combustion pressure peak of sound vibration. Suggestions on how to reduce the explosion hazard in kitchen have been given.
指出可能是发生了声振不稳定燃烧压力峰造成的，并相应给出减小厨房天然气爆炸危害度的几点建议。
Combined with coal characteristics in goaf of fully mechanized top-coal caving, determinant criteria and methods of hazard zone in goaf are determined by theory of coal spontaneous combustion zone.
本论文结合综放面采空区浮煤自然发火的特点，运用煤自燃危险区域判定理论，确定了采空区自燃危险区域的判定条件和方法步骤。
Coal spontaneous combustion not only wastes resources and pollutes the environment, but also causes safety hazard.
煤炭自燃既浪费资源、污染环境，又对煤炭的装车、运输造成安全隐患。
Coal spontaneous combustion not only wastes resources and pollutes the environment, but also causes safety hazard.
煤炭自燃既浪费资源、污染环境，又对煤炭的装车、运输造成安全隐患。
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