"uncured pelts"
uncusn.钩形器官;钩形突
UNabbr.(=United Nations) 联合国pron.<口>人,事物,家伙,东西
undamped oscillator无阻尼振荡器
unclassified degree普通学位
unregulated exhaust非常规排放
uncontinuous system非连续系统
unlisted securities非上市证券
undulatory movement波形运动
unpolarized neutron未极化中子
unquestioning trust无限信任
unemployment reason失业原因
unproved reservoirs未探明油藏