单词	poloidal
释义	poloidal /pəˈlɔɪd(ə)l / adjective Physics Relating to or denoting a magnetic field associated with a toroidal electric field, in which each line of force is confined to a radial or meridian plane.But where plasma current alone creates the confining poloidal field in a tokamak, in NCSX, the current will contribute about a quarter of that field, with the rest coming from external magnets.... The second component of the magnetic field points ‘the short way’ round the torus and is called the poloidal field. Origin 1940s: from polar, on the pattern of toroidal.
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