The researches about agricultural modernization have been carried out a long time. Since the 16 th National Congress of the Communist Party of China( CPC),there have been fundamental changes in China's agricultura...The researches about agricultural modernization have been carried out a long time. Since the 16 th National Congress of the Communist Party of China( CPC),there have been fundamental changes in China's agricultural policies. The works of three rural issues with the development of modern agriculture rapidly became the main topic. The practice promoted researches of agricultural modernization in the connotation,characteristics,path selection,and indicator system construction. With the introduction of simultaneous development of " four modernizations" and coordinated development of " five modernizations",the theoretical researches of China's agricultural modernization have been provided with new connotations. In the existing achievements of " four modernizations" and " five modernizations" containing agricultural modernization,the characteristics,paths,indicator system and evaluation methods of agricultural modernization are constantly enriched. Through sorting out the theoretical achievements in the researches about agricultural modernization since the 16 th CPC National Congress of the CPC,this paper explored the new characteristics,new paths and new indicator system of agricultural modernization,to provide reference for the further transformation and upgrading of China's agriculture and the formulation of relevant policies.展开更多
随着近年来汽车等工业节能减排对更高性能轻质镁合金的迫切需求,镁合金在工业应用中展现出了很大的发展前途。稀土镁合金系由于具有高温强度高、优良抗蠕变性能及耐热性能以及良好的塑性和耐腐蚀性等高性能,已经成为越来越受到重视的镁...随着近年来汽车等工业节能减排对更高性能轻质镁合金的迫切需求,镁合金在工业应用中展现出了很大的发展前途。稀土镁合金系由于具有高温强度高、优良抗蠕变性能及耐热性能以及良好的塑性和耐腐蚀性等高性能,已经成为越来越受到重视的镁合金系之一,并在航空航天、电子、汽车、通讯等领域得到了广泛应用。目前,国内外已开发了Mg-Gd、Mg-Y、Mg-Gd-Y、Mg-Y-Gd等一系列稀土镁合金。综述了高性能稀土镁合金的研究进展和应用现状,主要介绍了Mg-Y和Mg-Gd二元和多元合金系的研究开发及应用的新进展,以及含长周期堆垛有序结构(Long Period Stacking Ordered Structure,简称LPSO结构)的Mg-Y-Zn、Mg-Gd-Zn、Mg-Gd-Y-Zn、Mg-Y-Gd-Zn合金系的研究现状。最后,展望了高性能稀土镁合金的发展趋势。展开更多
文摘The researches about agricultural modernization have been carried out a long time. Since the 16 th National Congress of the Communist Party of China( CPC),there have been fundamental changes in China's agricultural policies. The works of three rural issues with the development of modern agriculture rapidly became the main topic. The practice promoted researches of agricultural modernization in the connotation,characteristics,path selection,and indicator system construction. With the introduction of simultaneous development of " four modernizations" and coordinated development of " five modernizations",the theoretical researches of China's agricultural modernization have been provided with new connotations. In the existing achievements of " four modernizations" and " five modernizations" containing agricultural modernization,the characteristics,paths,indicator system and evaluation methods of agricultural modernization are constantly enriched. Through sorting out the theoretical achievements in the researches about agricultural modernization since the 16 th CPC National Congress of the CPC,this paper explored the new characteristics,new paths and new indicator system of agricultural modernization,to provide reference for the further transformation and upgrading of China's agriculture and the formulation of relevant policies.
文摘随着近年来汽车等工业节能减排对更高性能轻质镁合金的迫切需求,镁合金在工业应用中展现出了很大的发展前途。稀土镁合金系由于具有高温强度高、优良抗蠕变性能及耐热性能以及良好的塑性和耐腐蚀性等高性能,已经成为越来越受到重视的镁合金系之一,并在航空航天、电子、汽车、通讯等领域得到了广泛应用。目前,国内外已开发了Mg-Gd、Mg-Y、Mg-Gd-Y、Mg-Y-Gd等一系列稀土镁合金。综述了高性能稀土镁合金的研究进展和应用现状,主要介绍了Mg-Y和Mg-Gd二元和多元合金系的研究开发及应用的新进展,以及含长周期堆垛有序结构(Long Period Stacking Ordered Structure,简称LPSO结构)的Mg-Y-Zn、Mg-Gd-Zn、Mg-Gd-Y-Zn、Mg-Y-Gd-Zn合金系的研究现状。最后,展望了高性能稀土镁合金的发展趋势。
