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应用封闭式箱法技术测定了玉米、大豆田中Ｎ２Ｏ和ＣＨ４全年的通量变化．指出Ｎ２Ｏ排放有明显的季节变化和明显的日变化．大量的Ｎ２Ｏ排放发生在作物生长季节......
用SrCO3、Al2O3、Eu2O3和Dy2O3烧制SrAl2O4:Eu2+,Dy3+长余辉光致发光陶瓷,其烧结温度为1300℃-1400℃,烧结时间为3小时.H3BO3作为......
系统地介绍了国内外河口悬沙通量研究的进展,目前对于河口悬沙通量主要采用模型研究、水文学方法、机制分解、仪器直接测量等方法......
