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Aviation acronyms
Aviation acronym
SHF
Super high frequency [3 000 to 30 000 MHz]
SH
Shower (followed by RA = rain, SN = snow, PL = ice pellets, GR = hail, GS = small hail and/or snow pellets or combinations thereof, e.g. SHRASN = showers of rain and snow)
SI
International system of units
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