uncapv.脱掉帽子；打开盖UNabbr.(=United Nations) 联合国pron.<口>人，事物，家伙，东西Unbalanced Distribution非平衡分布undisclosed information未透露的信息unparied thyroid plexus甲状腺奇(静脉)丛untimbered rill stoping无支护倾斜分层充填法回采Unna's comedo expressorunbalanced interference非平衡干扰uncompleted transaction未了事项,未完成的交易unfamilarization effect陌生化unmatched uncertainties非匹配不确定性unreachable nonterminal[计] 执行不到的非终结符