| 摘要 |
<p>A method for magnetizing a magnetizable object (100), the method comprising the steps of applying a first degaussing signal (1300) to the magnetizable object to degauss the magnetizable object, wherein the first degaussing signal is an alternating electrical signal having a first frequency and a first amplitude, applying a magnetizing signal (1400) to the degaussed magnetizable object to magnetize the magnetizable object, and applying a second degaussing signal (1500) to the magnetized magnetizable object to partially degauss the magnetized magnetizable object, wherein the second degaussing signal is an alternating electrical signal having a second frequency and a second amplitude.</p> |
