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????:1??????????:????
2???????
3?????????
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5???????????
??????????????????????6???????????????????????16??????????????????????? (????????????????? ?????)??16?????,?,??6mK(??????????????-273.144?),???????????????????????
????????????,?????????,????????????????????????,????“??????????????”(??????273.15?)??,?????????????????,???????????????????????????????
???,??????????,??????????1mK,???????6mK-200mK???????????????????,?,?????????????????????????????,????????????20mK????????????,???????????????,??????????????????????,???????????????????,????????
??????????????,????????????????????????????????,?????????????,??????(??????????????????????????) ????????????????????:???