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煤炭自然发火的潜伏期是表示自燃危险的最重要特征,目前都是按乌克兰各矿井在近10年内发生火灾的统计数字标出来的。
The latent period of spontaneous combustion of coal, the most important characteristic of the risk of spontaneous combustion, is now marked by the statistics of fires occurring in Ukraine’s mines in the last 10 years.