Eumen.欧梅河(在西班牙)EUabbr.欧盟(=European Union)Eucheuma edulen.食用麒麟菜eutrophic pond富营养化池塘eulerian angle欧拉角Euglena obtusan.钝顶裸藻euler variable欧拉变量Eutrema wasabi山葵Eulophia tiara黄花美冠兰Euler integral欧勒积分Euhoplopsyllusn.真武蚤亚属Euxoa decoransn.华切夜蛾