| 摘要 |
This disclosure provides methods and apparatus for adjusting magnetic orientations of different sets of magnets in an array. In one aspect, a first set of magnets in the array can be heated. A magnetic field with a first orientation can be applied to the array of the magnets, and adjusting the magnetic orientations of the first set of magnets to the first orientation of the magnetic field. A second set of magnets in the array can be heated and the magnetic field can have a second orientation. The magnetic orientations of the second set of magnets can be adjusted to the second orientation. |
