空气过剩系数:增大空气过剩系数，可以加速混合，使火焰变短，反之则混合缓慢，火焰拉长。这两种情况都有一些实际利用的例子。Airsurpluscoefficient:increasetheairsurpluscoefficient,canacceleratethemixing,maketheflameshorter,andviceversa,slowmixing,flameelongated.Therearesomeexamplesofpracticaluseofthesetwocases.加热炉包括有连续加热炉和室式加热炉等。金属热处理用的加热炉另称为热处理炉。初轧前加热钢锭或使钢锭内部温度均匀的炉子称为均热炉。广义而言，加热炉也包括均热炉和热处理炉。Theheatingfurnacec***istsofacontinuousheatingfurnaceandachamberheatingfurnace.Theheatingfurnaceformetalheattreatmentisalsocalledtheheattreatmentfurnace.Beforethebloomingofheatingsteelingotsortheinternaltemperatureofingotuniformcalledpit.Broadlyspeaking,theheatingfurnaceincludesfurnaceandheattreatmentfurnace.台车式加热炉的组成包括加热炉本体和余热回收系统。余热回收系统中有一个空气预热器,空气预热器是又由非冷凝式空气预热器和冷凝式空气预热器两段组成。Thetrolleyheatingfurnacec***istsofaheaterbodyandawasteheatrecoverysystem.Thereisanairpreheaterinthewasteheatrecoverysystem.Theairpreheaterisofanon-condensingairpreheaterandacondensingairpreheater.)