资料来源 : pyDict

磁极

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Pole \Pole\, n. [L. polus, Gr. ? a pivot or hinge on which
   anything turns, an axis, a pole; akin to ? to move: cf. F.
   p[^o]le.]
   1. Either extremity of an axis of a sphere; especially, one
      of the extremities of the earth's axis; as, the north
      pole.

   2. (Spherics) A point upon the surface of a sphere equally
      distant from every part of the circumference of a great
      circle; or the point in which a diameter of the sphere
      perpendicular to the plane of such circle meets the
      surface. Such a point is called the pole of that circle;
      as, the pole of the horizon; the pole of the ecliptic; the
      pole of a given meridian.

   3. (Physics) One of the opposite or contrasted parts or
      directions in which a polar force is manifested; a point
      of maximum intensity of a force which has two such points,
      or which has polarity; as, the poles of a magnet; the
      north pole of a needle.

   4. The firmament; the sky. [Poetic]

            Shoots against the dusky pole.        --Milton.

   5. (Geom.) See {Polarity}, and {Polar}, n.

   {Magnetic pole}. See under {Magnetic}.

   {Poles of the earth}, or {Terrestrial poles} (Geog.), the two
      opposite points on the earth's surface through which its
      axis passes.

   {Poles of the heavens}, or {Celestial poles}, the two
      opposite points in the celestial sphere which coincide
      with the earth's axis produced, and about which the
      heavens appear to revolve.

资料来源 : WordNet®

magnetic pole
     n 1: either of two points where the lines of force of the Earth's
          magnetic field are vertical
     2: one of the two ends of a magnet where the magnetism seems to
        be concentrated [syn: {pole}]