These shelves can be adhered to any magnetic surface.

磁货架亨利·尤利尔这些货架上可以加入任何磁面。

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Magnetic drum Cylinder having a magnetic surface on which to store data.

有磁性表面，可贮存数据的圆筒。

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There are also bad sectors that cannot be recovered because the magnetic surface is scratched.

也有坏扇区，不能收回的，因为磁表面是抓伤。

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They'd balance a spoon-shaped piece of magnetic rock on any flat surface, and since it was magnetic, the handle would swivel to align itself with the Earth's magnetic poles.

FORBES: Magazine Article

Magnetic activity on the stellar surface could also be caused by accretion of material onto it.

MSN: Newborn star's 'heartbeat' seen by X-ray telescopes

"We think that magnetic activity on or around the stellar surface creates the super-hot plasma, " Hamaguchi said.

MSN: Newborn star's 'heartbeat' seen by X-ray telescopes