The result indicated that the energydemand of our country is the process of trend stability with a structure change rather than the process of unit root with a structure change;
研究结果表明：我国的能源需求是带有结构突变的趋势稳定过程而非结构突变的单位根过程；
2
Social development has an increasing demand of energy, energy-saving and emission-reduction have become a huge trend all over the world.