發送短信 : Fluxgate effect in twisted magnetic wire

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|  __ \\   |  ___||  |  _ \\    / _ \\      ___   
| |  \ ||  | ||__    | |_| ||  | / \ ||    /   || 
| |__/ ||  | ||__    | .  //   | \_/ ||   | [] || 
|_____//   |_____||  |_|\_\\    \___//     \__ || 
 -----`    `-----`   `-` --`    `---`       -|_|| 
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