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白垩纪末大灭绝
释义
白垩纪末大灭绝
Encyclopedia
理学
古生物学
释
End-Cretaceous mass extinction
白垩纪末大灭绝
距今6500万年左右,地球生物圈遭受的一次大规模的集群灭绝事件。
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usufruct of natural resources
Usulután
US Unified Tri-service Cognitive Performance Assessment Battery
usury
Usu Shi
US-USSR Leaders Summit Meeting in Geneva
Usu tatar
U.S. Wheat Associates
UT
Utah Museum of Fine Arts
Utah State
U Tak
Uta Monogatari
UTAUT
UTC
UTC-PAB
UTD
uterine artery
uterine body
uterine branch
uterine cervix
uterine cycle
uterine extremity
uterine gland
uterine malformation
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