球;
Based on the mechanocaloric effect of superfluid helium, a new way to produce super low-temperature was conceived and analyzed theoretically.
从超流
机械热效应出发，构思了一种制取极低
验方法，并从理论上进行了分析。
（符号为He，2号元素）；液态
Based on the mechanocaloric effect of superfluid helium, a new way to produce super low-temperature was conceived and analyzed theoretically.
从超流机械热效应出发，构思了一种制取极低验方法，并从理论上进行了分析。
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