The pots discovered in Inner Mongolia and Hebei Province are huge with a maximum diameter of 9 m and a depth of 3.5 m, s......

Climatic changes in the Tarim River basin since 12 kaBP were divided into four stages based on the analyses of sedimenta......

对自然条件下贮存的猕猴桃,甜橙等水果在不同时期的某些有机成分的变化进行了研究.结果表明:这三种水果中的总精含量在四十天内随......

在我国,无论是研究与开发的进行,还是技术创新与创新的扩散.都越来越取决于劳动力素质,即人力赍源的素质.......

Viscose filaments were subjected to alkaline degradation by immersing them in sodium hydroxide solutions at concentratio......

知识经济给社会生活带来了深刻的变化,也改变着政府的生态环境,进而影响到政府的职能定位,主要表现在:知识经济模糊了政府经济管理......

There are seven steps of terrace both in the Guide basin and Gonghe basin along the Yellow River. More close to the sour......