矿井火灾时期，火源巷道内高温烟流运动为三维非定常的流动及传热传质过程。
The movement of high temperature smoke in a fire road during mine fire was a three dimensional unsteady flow which is accompanied with heat and mass transfer.
在矿井火灾灾变时期，井巷可通行性主要根据巷道内是否具有高温有毒有害气体而确定。
Fire hazard travel ability of shaft and roadway mainly depends on whether or not there are high temperature toxic gases in the roadway conditions.
矿井火灾时期，火源巷道内高温流体运动为非定常流动以及传热传质过程。
In mine fire period, the movement of high-temperature flow is a process of unsteady flowing, heat transferring and mass transferring in fire tunnel.
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