火源生成的火焰区是燃烧引起的化学反应区域。
The flame area which has developed from the fire source is an area of chemical reaction caused by combustion.
结果表明：图像清晰地显示了爆轰波阵面的诱导激波、横波及化学反应区。
The results show that the transverse waves, leading shock and reaction zone can be clearly observed in the consecutive images.
旋涡加速了未反应区的化学反应速率。
利用发动机循环模拟软件BOOST，并使用详细的化学反应动力学机理，建立了乙醇HCCI发动机的单区模型。
Combined the engine cycle simulation software BOOST and the detailed mechanism of ethanol chemical reaction kinetics, a single-zone model of ethanol HCCI engine was established.
高炉风口回旋区是高炉顺行不可缺少的重要反应区，而且回旋区内部的物理、化学反应十分复杂。
BF raceway is an indispensable part of the reaction area to the blast furnace operation, moreover the internal physical and chemical reaction is very complex.
旋涡加速了未反应区的化学反应速率。
旋涡加速了未反应区的化学反应速率。
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