Paleoseismology was originated in the late nineteen century, but the modern paleoseismology formed at the end of the 197......

As Europe seeks to retain its leading position in industrial competitiveness,there is an urgent need to establish a plat......

本文依据大量实测资料，采用季节性表达尔检验法定量描述了乌裕尔河的水质污染发展趋势。为决策部门采取防治措施提供依据。......

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Based on defition of desertification in Intematonal Convention toCombat Desertfication. and on Chinas situation, desenif......