Unraun.昂劳
UNabbr.(=United Nations) 联合国pron.<口>人,事物,家伙,东西
Un-rounded Cross Section Airframe非圆截面弹体
Unbroken perfection without leakage完善无缺
unmanned small - scale helicopter小型无人直升机
unemployment compensation commission失业救济委员会
Unpredictability and less of control和失去控制感
unprotected left main stern stenosis无保护左主干病变
unconfined uniaxial compression test单轴压缩试验
Unmanned Free-Swimming Submersible无人自泳式潜水器
Unlicenced passion lively eye shadow纵情活力炫彩眼影
uncontrolled dumping of toxic wastes有毒废弃物的乱堆乱放