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U.S. Navy. Ferrite. Electricity. Static Magnetic Field. Microphone. Moving Coil Driver. Telephone. Electrostatic. Headphones. Transducer. Plastic. Wire. Portable Media P layer. Speaker. Stereo. Music. Radio. Instrument. Personal Computer. Sound.
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U.S. Navy Ferrite Electricity StaticMagneticField Microphone Moving Coil Driver Telephone Electrostatic Headphones Transducer Plastic Wire Portable Media Player Speaker Stereo Music Radio Instrument PersonalComputer Sound