This acronym stands for above ground level.
21:49, 14 January 2013
Emirates is an airline based in Dubai, United Arab ...
Beijing Capital International Airport is the main ...
A double-deck, wide-body, four-engine jet airliner ...
A single-seater helicopter that is made by a 20-year-old ...
A new Lockheed Martin concept plane that is able to fly up ...
An unmanned arrowhead-shaped hypersonic plane developed in ...
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