hot smoke layer 热烟气层
smoke layer depth 烟气层厚度
smoke layer height 烟气层高度
smoke layer temperature 烟气层温度
instability of smoke layer 烟气层失稳
dimensionless height of smoke layer 无量纲烟层高度
length of countercurrent smoke layer 逆流层长度
inverse smoke-flowing layer 烟气逆流层
smoke back flow layer 烟流逆流层
The results showed that the temperature rise of smoke layer was very low, but the descending of smoke layer was quick.
试验结果表明，烟气在大空间内的温度并不高，但烟气层下降速度很快。
Therefore the article recommends that according to fire heat release rate, escape time and control height of smoke layer, the rate of mechanical smoke extraction should be reasonably decided.
文章建议根据火源释热率、火灾发生后的逃生时间、烟气层的控制高度合理确定大空间的机械排烟速率。
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