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人类在创造社会文明的同时,也在不断破坏人类赖以生存的环境空间。人口膨胀、资源枯竭、环境恶化现已成为当今社会经济发展所面临的三大尖锐问题.自然资源的枯竭和贫化,更让人日益清醒的感觉到人类继续发展所面临的危饥。据有关专家预测到2070年全球将会出现金属资源枯竭,到21世纪末,石油、天然气等能源资源将面临竭泽而渔的地步.在现实生活中随着新技术的发展和人类物质文化水平的不断提高,无论是机电产品还是日常生活用品,都越来越多的追求高性能化,伴随而来的是这些产品和材料的大量生产、大量消费和大量废弃。据统
While creating social civilization, mankind is also constantly destroying the environmental space upon which mankind depends. Population expansion, depletion of resources and deterioration of the environment have now become the three most acute problems facing the social and economic development of today. The depletion and depletion of natural resources make people increasingly soberingly aware of the danger they face in continuing human development. Experts predict that there will be depletion of metal resources in the world by 2070. By the end of the 21st century, energy resources such as oil and natural gas will face a dilemma: In the real life, with the development of new technologies and the continuous improvement of human material and cultural standards, Whether it is mechanical and electrical products or daily necessities, are more and more pursuit of high performance, accompanied by the mass production of these products and materials, a large number of consumption and a large number of abandoned. According to the system