However, in spite of many attempts, such a 'supersolid' phase has yet to be observed in bulk solid 4He.
但是现
，科学家们已高压下固体氦中观察到了
“
级流动性”
证据。
立体,多次体However, in spite of many attempts, such a 'supersolid' phase has yet to be observed in bulk solid 4He.
但是现，科学家们已高压下固体氦中观察到了“级流动性”证据。
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