f - region造句

• The F-region is located directly above the E region ( formerly the Kennelly-Heaviside layer ) and below the protonosphere.
• In work published in 1968 and 1969 Muggleton studied long-term oscillatory variations in the relationship between F-region ionization and visible solar activity.
• The "'Coqu?"'and "'Coqu?2 "'( "'Coqu?Dos "') campaign involved a sequence of sounding rocket launches in order to study the dynamics of the E-and F-region ionosphere and increase our understanding of layering phenomena, such as sporadic E layers.