主要能源可分为四类:矿物燃料、太阳能、核能和重力能。工业革命以来,矿物燃料成了最主要的能源,但人们普遍对未来能源可获量的预测是:世界对矿物燃料的需求量很快就要超过这种能源所能提供的数量。能源在经济上和战略上所居的重要地位,使多数国家的政府不得不涉足能源市场,以求在能源发展、能源技术、能 The main energy can be divided into four categories: fossil fuels, solar energy, nuclear energy and gravity energy. Since the Industrial Revolution, fossil fuels have become the most important energy sources, but the general prediction of the future energy availability is that the world’s demand for fossil fuels will soon exceed the amount that such energy can provide. The economic and strategic importance of energy makes the governments of most countries have to step into the energy market in order to promote energy development, energy technology,