Safety production of mine 矿井安全生产
Mine fire preventing and controlling always is the key question of coal industry safety in production.
矿井火灾的防治一直是煤炭工业安全生产的重点问题。
According to the requirements of mine safety production, fast wind speed_temperature relay is researched.
根据煤矿安全生产的要求与需要，研究快速检测风速温度继电器。
The ventilation system adjustment is one of the routines in mine production, and the quality of the adjustment project concerns mine safety production directly.
矿井通风系统调整是矿井生产的日常工作之一，调整方案的优劣直接关系到矿井的安全生产。
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