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tetragonal    
a. 四角形的

四角形的

tetragonal
adj 1: of or relating to or shaped like a quadrilateral


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  • The models were right! Astronomers locate universes . . .
    "The 'missing' matter may truly be lurking in hard-to-see threads woven across the universe " Astronomers have discovered a vast tendril of hot gas linking four galaxy clusters and stretching out
  • “The models were right”: astronomers find ‘missing’ matter
    Astronomers have discovered a huge filament of hot gas bridging four galaxy clusters At 10 times as massive as our galaxy, the thread could contain some of the Universe’s ‘missing’ matter, addressing a decades-long mystery
  • ‘We Were Right’: Astronomers Find What the Cosmos Was Hiding
    This finding not only helps account for the universe’s missing baryonic matter, it also supports long-standing models of how the universe formed The Cosmic Web —an enormous network of gas and galaxies—is thought to have acted as a framework for how matter assembled after the Big Bang, guiding the formation of galaxies and clusters along
  • Astronomers Uncover a Massive Shaft of Missing Matter
    "It seems that the simulations were right all along " The filament spans 23 million light-years in a galaxy supercluster 650 million light-years away (ESA XMM-Newton and ISAS JAXA) Most matter in the Universe comprises of a 'dark' variety we can't easily identify
  • Scientists have finally FOUND the universes missing matter
    The models also tell scientists that there should be a certain amount of normal matter in the universe However, only about 20 to 30 per cent of the predicted matter has ever been seen
  • The models were right: Astronomers find missing matter . . .
    Astronomers have discovered a huge filament of hot gas bridging four galaxy clusters At 10 times as massive as our galaxy, the thread could contain some of the universe's 'missing' matter
  • Universes Missing Matter Finally Found In 23-Million-Light . . .
    LEIDEN, Netherlands — For decades, astronomers have been hunting for roughly 40% of the universe’s ordinary matter that seemed to have vanished without a trace Now, researchers using powerful X-ray telescopes have found some of it hiding in a massive cosmic filament stretching 23 5 million light-years between galaxy clusters





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