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 desert plant Hedysarum scoparium uses leaflets and raehises as its photosynthetic organs.The abundance of leaflets w......

为筛选出檀香(Santalum album)在云南生长的优良寄主植物,选择了白酒草(Conyza japonica)、山合欢(Albizia kalkora)、旱冬瓜(Alnu......