工业炉窑烟气余热回收利用，是提高炉子热效率、节约炉用燃料的极为有效的途径。
Recycle and utilization of waste heat in exhaust fume of industrial furnaces is the efficient way enhancing furnace heat efficiency and saving fuel used by furnace.
与此稍有不同的是，气体发生炉曾用于用轻油制出燃料气。
Somewhat differently, gas generators have been used to produce fuel gas from light oil.
电弧炉用来生产特殊钢比用任何其他炉子都好，因为它不需要燃料。
The electric arc furnace is better for the production of special steels than any other types of furnace, since it needs no fuel.
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