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upper atmospheric physics造句

"upper atmospheric physics"是什么意思  
造句與例句手機(jī)版
  • During the winter time, the principal research activity is Upper Atmospheric Physics.
  • He joined Michigan's Upper Atmospheric Physics Group, which had been set up that year, as a research associate and became the head of the group a year later.
  • Prior to joining NASA, Schweickart was a research scientist at the Experimental Astronomy Laboratory at the Massachusetts Institute of Technology, and his work there involved research upper atmospheric physics, star tracking and stabilization of stellar images.
  • It's difficult to see upper atmospheric physics in a sentence. 用upper atmospheric physics造句挺難的
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