EUCOM驻欧美军总部EUabbr.欧盟(=European Union)eutric arenosols饱和红砂土eutric histosols饱和有机土euchromatic gene常染色质基因Eustrotis unculan.文夜蛾euhedralgranularadj.自形粒状eutrophic system富养系统eucalypt ecology桉树生态eucalypt species桉树品种eutectic preform共晶合金盘料EU defense plans欧盟防务计划