当液氦（指4He）的温度降到2.17K时，液氦从原来的正常流体突然转变为具有一系列极不寻常的性质的“超流体”，这就是超流现象(Superfluidity)。
科学家们已经推测出了这种成对现象和超流现象的间接证据。
Scientists have accumulated indirect evidence for such pairing and superfluidity.
玻色-爱因斯坦凝聚(BEC)是量子统计的结果，与超流现象密切相关。
Bose-Einstein condensate (BEC) is the consequence of quantum statistics and is closely related to superfluid phenomena.
以超流氦为对象，对其沸腾传热过程中的热声振荡现象进行了研究。
The thermoacoustic oscillation during film boiling heat transfer in superfluid helium is studied.
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