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......

The 18 species of bird studied originally are known to belong to muscicapids, robins and sylviids of passerines, but som......

sex1/sex2是一对可以广泛应用于鸡形目鸟类分子性别鉴定的引物.本研究尝试采用此对引物对17种雀形目鸟类进行性别鉴定.然而在实验......