单词	F layer
释义	F layer noun : the highest and most densely ionized regular layer of the ionosphere occurring at night within the F region Word History First Known Use 1928, in the meaning defined above
随便看	ugrics Ugro- ugrug ugsome ugsomenesses ugt uh uh-huh uh-oh uh-uh UHF uhfs uhlan Uhland uhlans uhuru uhurus UI ui uid no Uighur Uighurian Uighuric uighurs uigur

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