Imagine a metal that "remembers" its original, cold-forged shape, and can return to that shape when exposed to heat or a magnetic pulse.
想象一种金属,它可以“记忆”其初始、冷锻造的形状,当受热或磁脉冲时会回复到该形状。
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They have been taken from the originalmagnetic tape recordings made at Johnson Space Center, Houston, which have recently been re-digitised to make uncompressed, higher-fidelity audio recordings.