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Crabs, lobsters and shrimp now have a family tree dating 500 million years（图）
Crabs lobsters shrimp family tree dating 500 million years
2019/10/30
Researchers have for the first time traced the roots of crabs, lobsters and shrimp to create the family tree of crustaceans people love to eat.The tree shows the 450-million-year evolution of these 10...
Laboratory Measurements of the Drag Force on a Family of Two-Dimensional Ice Keel Models in a Two-Layer Flow
Drag Force Two-Layer Flow Two-Dimensional Ice Keel Models
2008/12/12
A review of the upper structure of the Arctic Ocean and its overlying ice cover suggests that significant potential exists for the generation of internal wave fields by the deeper drafts of the pressu...
April 3, 2007,DURHAM, N.H. -- Spring has arrived, and with it the UNH Marine Docents’ sixth annual Family Boat-Building Workshop. During the weekend workshop, six families will have an opportunity to ...