Unfer温费尔UNabbr.(=United Nations) 联合国pron.<口>人，事物，家伙，东西unchangeable metamorphosis不变态Unexploded Incendiary Bomb未爆燃烧弹unbalanced threephase load不平衡三相负荷unformatted input-output无格式输入输出unbiassed level alpha test无偏α水平检定uncoated and smooth tongue光剥舌Unbuckle your seat belt.解开你座位上的安全带。unbalance residual content残余不平衡量uncalibration visual servo无定标视觉伺服unbounded-buffer problem无界缓冲区问题