unused相关论文
Carbon sequestration benefits of the grain for Green Program in the hilly red soil region of souther
Soil erosion disturbs not only the global carbon cycle,but it is a complex environmental problem.Revegetation could redu......
对非标可转位式端铣刀的CAD进行了研究 .所编制的应用软件以AUTOCAD为开发工具 ,从设计计算到绘图全部采用AUTOLISP语言编写 ,适用......
在农村土地流转经营过程中,许多进行流转的农地是自然环境和基础设施条件较好、农民正在耕作的土地,而偏远地区村（组）农民抛荒的闲置......
The production of cellulosic bioethanol from non-edible plants is drawing increasing attention, as it potentially avoids......
2005年在对闲置耕地调查的基础上，分析了出现耕地闲置的原因，并结合浙江省实际，提出了闲置耕地合理利用的对策与途径。......
Perceptions on the risk and management of unused pharmaceuticals toward the creation of guidelines o
The increased usage of pharmaceuticals, its introduction to and accumulation in the environment are growing environmenta......
