To create the memory they tapered the wire to an hourglass shape at one point along its length.

为了制造出存储体，他们又根据金属丝的长度将其打造成沙漏的形状并固定于一点。

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To create the memory they tapered the wire to an hourglass shape at one point along its length.

ECONOMIST: Spintronics

The mesh bag was long enough that if we caught a tiger swallowtail or a spicebush swallowtail, or a mourning cloak, or a European cabbage, or a common sulphur, or a red admiral, or a painted lady, or a monarch, or a viceroy we could, with a twist of the wrist, flip its tapered tip over the wire rim and trap the butterfly inside.

NPR: Excerpt: 'At Large and At Small'