论文编号:GY052 论文字数:32909.页数:44 摘 要
Along with economic development,human community to the growing demand for natural resources,but the planet's natural resources, especially non-renewable resources of exploitation has increased slowly, but after 100 years of exploitation,Many important natural resources has been facing depletion crisis.By the exploitation of natural resources into human society,the ultimate waste and garbage in the form of stagnation, human society creating a "resources-products-waste" is the single economic model. With total waste of human society,production and consumption and the growth surge,it will not only take up a lot of land, and because some of them contain poisonous substances,but also the environment and human health caused enormous threat. 正文目录
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Tags:机电 制造业 逆向 物流 应用 研究 | 2011-03-24 10:59:41【返回顶部】 |