When water or emulsion used in mining or improve safety condition, it also changes the microbial living environment in coalbed.
煤层注水与水力作业在解决煤矿安全与生产难题的同时，也改变了煤层微生物生存环境。
The apartment will be cleaned once every week, and the apartment administrator will check the sanity and safety condition at the end of each month.
公寓房间每周打扫一次，每月末公寓管理员检查各房间的卫生与安全情况。
The steep inclined seam is a difficult mining seam with a poor safety condition, a poor support stability, a lower mechanization and lower mining rate.
急倾斜煤层属难采煤层，具有安全状况差、支架稳定性差、机械化程度低、回采效率低等问题。
Through each single factor safety condition of the system, grasp overall safety condition of the system, which has the practical application value.
可在了解系统各个单因素的安全状况的同时，掌握系统整体安全状况，具有实际应用价值。
Through each single factor safety condition of the system, grasp overall safety condition of the system, which has the practical application value.
可在了解系统各个单因素的安全状况的同时，掌握系统整体安全状况，具有实际应用价值。
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