It's shorthand for Radio Frequency. In the electromagnetic spectrum that is associated with the propagation of radio waves.
00:45, 26 November 2012
MSDS: Material safety data sheet (MSDS) is a form ...
French standard NF C 61-314 "Plugs and socket-outlets ...
is an innovative gadget that generates electricity ...
Samsung's new technology that allows a battery to be ...
The plugs have three round pins arranged in a triangle, ...
The NEMA 5-15 plug has two flat parallel blades like NEMA ...
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