UWBultrawideband,超带宽
Un.字母U
Ulrnaceae tree species榆科树种
ull water-solubility全水溶性
U-type compensator U型调整器, 弧形伸缩器
ulerythema sycosiforme狼疮样须疮,须疮样瘢痕性红斑
ultimobranchial bodies[医] 后鳃体, 鳃后体
Ulrich's fistula knife
U. S dollar hegemony美元霸权
Ule rs scale of colour乌列水色计
U.S. dollar crisis美元危机
UWB band-pass filter超宽带滤波器