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  1. #1
      Eiman
    Jul 2011
    -
    14,750

    . .
    . . - - . Sophisticated network of satalites 20200 GPS Global Positioning System 20200 . GPS 1973 . GPS 20200 23 56 . 6 55 . 18 1575MHz Code . Microprocessor Doppler Shift . . . ֡ GPS GPS . GPS GPS . GPS 15 . . . 1973 쿿!!
    .......

  2. #2

    Jul 2012
    5,302

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