Unar乌纳尔unaabbr.(英国)联合国协会(=United Nations Association)Una.n.尤娜(女子名)unallowable instruction digit非法字符unattended automatic exchange无人值班自动电话交换台unattended supervision system无人值守监控系统unacclimated activated sludge未驯化的活性污泥unappropriated earned surplus[经] 未支配盈余, 留存盈余unaudited financial statement未审核之财务报表unappropriated budget surplus[经] 未支配盈余unauthorized union activities未经许可的工会活动unappropriated surplus account[经] 未支配盈余帐户unamortized debenture expenses未摊债券发行费用