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Skew bridge

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Skew \Skew\, a.
   Turned or twisted to one side; situated obliquely; skewed; --
   chiefly used in technical phrases.

   {Skew arch}, an oblique arch. See under {Oblique}.

   {Skew back}. (Civil Engin.)
   (a) The course of masonry, the stone, or the iron plate,
       having an inclined face, which forms the abutment for the
       voussoirs of a segmental arch.
   (b) A plate, cap, or shoe, having an inclined face to receive
       the nut of a diagonal brace, rod, or the end of an
       inclined strut, in a truss or frame.

   {Skew bridge}. See under {Bridge}, n.

   {Skew curve} (Geom.), a curve of double curvature, or a
      twisted curve. See {Plane curve}, under {Curve}.

   {Skew gearing}, or {Skew bevel gearing} (Mach.), toothed
      gearing, generally resembling bevel gearing, for
      connecting two shafts that are neither parallel nor
      intersecting, and in which the teeth slant across the
      faces of the gears.

   {Skew surface} (Geom.), a ruled surface such that in general
      two successive generating straight lines do not intersect;
      a warped surface; as, the helicoid is a skew surface.

   {Skew symmetrical determinant} (Alg.), a determinant in which
      the elements in each column of the matrix are equal to the
      elements of the corresponding row of the matrix with the
      signs changed, as in (1), below. (1) 0 2 -3-2 0 53 -5 0
      (2) 4 -1 71 8 -2-7 2 1

   Note: This requires that the numbers in the diagonal from the
         upper left to lower right corner be zeros. A like
         determinant in which the numbers in the diagonal are
         not zeros is a skew determinant, as in (2), above.

Bridge \Bridge\, n. [OE. brig, brigge, brug, brugge, AS. brycg,
   bricg; akin to Fries. bregge, D. brug, OHG. brucca, G.
   br["u]cke, Icel. bryggja pier, bridge, Sw. brygga, Dan.
   brygge, and prob. Icel. br[=u] bridge, Sw. & Dan. bro bridge,
   pavement, and possibly to E. brow.]
   1. A structure, usually of wood, stone, brick, or iron,
      erected over a river or other water course, or over a
      chasm, railroad, etc., to make a passageway from one bank
      to the other.

   2. Anything supported at the ends, which serves to keep some
      other thing from resting upon the object spanned, as in
      engraving, watchmaking, etc., or which forms a platform or
      staging over which something passes or is conveyed.

   3. (Mus.) The small arch or bar at right angles to the
      strings of a violin, guitar, etc., serving of raise them
      and transmit their vibrations to the body of the
      instrument.

   4. (Elec.) A device to measure the resistance of a wire or
      other conductor forming part of an electric circuit.

   5. A low wall or vertical partition in the fire chamber of a
      furnace, for deflecting flame, etc.; -- usually called a
      {bridge wall}.

   {Aqueduct bridge}. See {Aqueduct}.

   {Asses' bridge}, {Bascule bridge}, {Bateau bridge}. See under
      {Ass}, {Bascule}, {Bateau}.

   {Bridge of a steamer} (Naut.), a narrow platform across the
      deck, above the rail, for the convenience of the officer
      in charge of the ship; in paddlewheel vessels it connects
      the paddle boxes.

   {Bridge of the nose}, the upper, bony part of the nose.

   {Cantalever bridge}. See under {Cantalever}.

   {Draw bridge}. See {Drawbridge}.

   {Flying bridge}, a temporary bridge suspended or floating, as
      for the passage of armies; also, a floating structure
      connected by a cable with an anchor or pier up stream, and
      made to pass from bank to bank by the action of the
      current or other means.

   {Girder bridge} or {Truss bridge}, a bridge formed by
      girders, or by trusses resting upon abutments or piers.

   {Lattice bridge}, a bridge formed by lattice girders.

   {Pontoon bridge}, {Ponton bridge}. See under {Pontoon}.

   {Skew bridge}, a bridge built obliquely from bank to bank, as
      sometimes required in railway engineering.

   {Suspension bridge}. See under {Suspension}.

   {Trestle bridge}, a bridge formed of a series of short,
      simple girders resting on trestles.

   {Tubular bridge}, a bridge in the form of a hollow trunk or
      rectangular tube, with cellular walls made of iron plates
      riveted together, as the Britannia bridge over the Menai
      Strait, and the Victoria bridge at Montreal.

   {Wheatstone's bridge} (Elec.), a device for the measurement
      of resistances, so called because the balance between the
      resistances to be measured is indicated by the absence of
      a current in a certain wire forming a bridge or connection
      between two points of the apparatus; -- invented by Sir
      Charles Wheatstone.
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