将中文译成英语
Mixed gas to produce hydrogen power 1.5Nm3 4KW.h, and acetylene from calcium carbide and water, power-hungry energy and acetone extraction, to produce 1 kg of calcium carbide, power 3.6KW.h, production of 1 Nm oxyacetylene be 4.4 kg of calcium carbide, the production of 1 Nm3 oxyacetylene power 15.84KW.h. Therefore, the hydrogen gas than acetylene and other gas can save a lot of natural resources and fossil energy. Meanwhile, in the cutting process, the hydrogen flame burning high strength, flame concentration, compared with other gas, penetrating power, less heat affected zone, no dross phenomenon, in the same efficiency, than oxyacetylene cutting costs to save 70 -80%, compared with propane and propylene gas cost savings of 50-70% cut, and cut a narrow slit to reduce the metal losses of 30-50%.