释义 |
helium IIn.(名词)- Liquid helium existing as a superfluid below the transition point of approximately 2.2°K at 1 atmosphere and having extremely low viscosity and extremely high thermal conductivity.(低温物理学用语)氦II:液体氦,转变点之下以超流体形式存在,1个大气压下转变点为约2.2°K,具有极低的粘稠度,但有极高的热传导性
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