belt n. (also Van Allen layer) each of two regions of intense radiation partly surrounding the earth at heights of several thousand kilometres.
[ J. A. Van Allen, US physicist b. 1914 ]
belt n. (also Van Allen layer) each of two regions of intense radiation partly surrounding the earth at heights of several thousand kilometres.
[ J. A. Van Allen, US physicist b. 1914 ]
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012