| 摘要 |
A magnet assembly comprising first and second sets of coils ( 1, 2 ) for generating respective magnetic fields, wherein the coils are constructed and arranged such that under working conditions, a first homogeneous region ( 3 ) can be generated within the envelope defined by the magnet 10 assembly and a second homogeneous region ( 4 ) can be generated outside the envelope, the resultant magnetic field in each region being sufficiently homogeneous to enable a NMR process to be performed on an object in the region.
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