ten·sion /ˈtɛn(t)ʃən/
  U拉緊,繃緊;緊張;張力,拉力,牽力(vt.)拉緊,繃緊,使緊張
  ten·sion /ˈtɛnʧən/ 名詞
  電壓,壓力,張力,拉緊,緊張
  tension
  張力
  tension
  張力 拉力
  Ten·sion n.
  1. The act of stretching or straining; the state of being stretched or strained to stiffness; the state of being bent strained; as, the tension of the muscles, tension of the larynx.
  2. Fig.: Extreme strain of mind or excitement of feeling; intense effort.
  3. The degree of stretching to which a wire, cord, piece of timber, or the like, is strained by drawing it in the direction of its length; strain.
  4. Mech. The force by which a part is pulled when forming part of any system in equilibrium or in motion; as, the tension of a srting supporting a weight equals that weight.
  5. A device for checking the delivery of the thread in a sewing machine, so as to give the stitch the required degree of tightness.
  6. Physics Expansive force; the force with which the particles of a body, as a gas, tend to recede from each other and occupy a larger space; elastic force; elasticity; as, the tension of vapor; the tension of air.
  7. Elec. The quality in consequence of which an electric charge tends to discharge itself, as into the air by a spark, or to pass from a body of greater to one of less electrical potential. It varies as the quantity of electricity upon a given area.
  Tension brace, or Tension member Engin., a brace or member designed to resist tension, or subjected to tension, in a structure.
  Tension rod Engin., an iron rod used as a tension member to strengthen timber or metal framework, roofs, or the like.
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  tension
       n 1: feelings of hostility that are not manifest; "he could sense
            her latent hostility to him"; "the diplomats' first
            concern was to reduce international tensions" [syn: latent
            hostility]
       2: (psychology) a state of mental or emotional strain or
          suspense; "he suffered from fatigue and emotional
          tension"; "stress is a vasoconstrictor" [syn: tenseness,
           stress]
       3: the physical condition of being stretched or strained; "it
          places great tension on the leg muscles"; "he could feel
          the tenseness of her body" [syn: tensity, tenseness, tautness]
       4: a balance between and interplay of opposing elements or
          tendencies (especially in art or literature); "there is a
          tension created between narrative time and movie time";
          "there is a tension between these approaches to
          understanding history"
       5: (physics) a stress that produces an elongation of an elastic
          physical body; "the direction of maximum tension moves
          asymptotically toward the direction of the shear"
       6: the action of stretching something tight; "tension holds the
          belt in the pulleys"