火区启封
Fire area unsealed
以上为机器翻译结果，长、整句建议使用 人工翻译 。
利用指标气体对治理效果进行分析，确保火区成功启封，保障了矿井的生产安全。
Indication gases were used for the analysis of the control effect, this can ensure the fire area to be successfully opened as well as the safe production in coal mines.
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