| 摘要 |
There is disclosed a magnetic assembly for use in orienting the magnetic particles which are orientable under the influence of a magnetic field. A non-magnetic housing assembly defines a storage area containing a plurality of discrete permanent magnets. Provided is an assembly for attracting the magnets to the interior of the assembly and a cover assembly which serves to restrain and protect the magnets. Such a cover assembly is made of a material which does not inhibit the natural extension of the lines of flux of the fields of the magnets.
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