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为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
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为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
以往研究表明,许多成年雄性大熊猫在圈养状态下不能表达正常的社群性行为.我们设计了一个实验来研究大熊猫正常社群性行为与性情特......
The Shangcheng stout salamander (Pachyhynobius shangchengensis) is a poorly known stream dwelling hynobiid salamander fr......
