Umayyad Caliphate
- 网络倭马亚王朝;倭马亚哈里发
Umayyad Caliphate
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University of Pisa
Uralic languages
United States Constitution
Univocalic
University of Glasgow
uniform electric field
Uniform magnetic field
uniform rectilinear motion
uniform circular motion
useful work
Unicameral Congress
urn burial
Urbain Jean Joseph Le Verrier
Ultraviolet radiation
utilization of resources
ubiquitin
University of Cambridge
UV-visible spectroscopy
University of Colorado
Ulaanbaatar