jamming
  干擾台,人為干擾
  jamming
  抗干擾
  jamming
  干擾
  Jam, v. t.  [imp. & p. p. Jammed p. pr. & vb. n. Jamming.]
  1.  To press into a close or tight position; to crowd; to squeeze; to wedge in; to cram; as, rock fans jammed the theater for the concert.
     The ship . . . jammed in between two rocks.   --De Foe.
  2.  To crush or bruise; as, to jam a finger in the crack of a door. [Colloq.]
  3.  Naut. To bring (a vessel) so close to the wind that half her upper sails are laid aback.
  jam
       n 1: preserve of crushed fruit
       2: informal terms for a difficult situation; "he got into a
          terrible fix"; "he made a muddle of his marriage" [syn: fix,
           hole, mess, muddle, pickle, kettle of fish]
       3: a dense crowd of people [syn: crush, press]
       4: deliberate radiation or reflection of electromagnetic energy
          for the purpose of disrupting enemy use of electronic
          devices or systems [syn: jamming, electronic jamming]
       v 1: press tightly together or cram; "The crowd packed the
            auditorium" [syn: throng, mob, pack, pile]
       2: push down forcibly; "The driver jammed the brake pedal to
          the floor"
       3: crush or bruise; "jam a toe" [syn: crush]
       4: interfere with or prevent the reception of signals; "Jam the
          Voice of America"; "block the signals emitted by this
          station" [syn: block]
       5: get stuck and immobilized; "the mechanism jammed"
       6: crowd or pack to capacity; "the theater was jampacked" [syn:
           jampack, ram, chock up, cram, wad]
       7: block passage through; "obstruct the path" [syn: obstruct,
           obturate, impede, occlude, block, close up]
          [ant: free]
       [also: jamming, jammed]
  jamming
       n : deliberate radiation or reflection of electromagnetic energy
           for the purpose of disrupting enemy use of electronic
           devices or systems [syn: electronic jamming, jam]