?? ????“????”???????????
![](https://image.chezhanri.com/2019/0521/20190521163539745.jpg)
????:1?????200????:?????
2????????
3???????????
4?????????
5?????????????
??????????????6????????????????????????????????16???? (????????????????? ??????????)??????????????16???????????????,????????????,??????6mK(?????-273.144?),??????
????????????,?,???????????????????????????????????????????,??“?????????????”(???????273.15?)???????????????????,???????????????????????????????????????????,?????????????????????????????????????
????,?????????????,??????????????1mK,??????????6mK-200mK?????????????????,??????????????????????,???????????????????,????20mK??????????????????????????,????????????????,?????,??,???????????????????????
?????,??,??????????????,??(????????????) ????:???????????