... 最低点 rock bottom 最低燃料消耗率 minimum fuel consumption rate 最低牌价 lowest quotation ...
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The flow rate of the secondary air is thus controled, and the excess air is restricted to minimum so as to decrease the fuel consumption of the furnace.
由此控制二次风量大小,以保持最低过剩空气量,达到节能目的。
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