?? ????“???????????”????
![](https://image.chezhanri.com/2019/0604/20190604101112718.jpg)
????:1???????:??????????
2??????
3???????????
4???????????
5??????????
?????6???????????????16?? (????? ??)???????16???????????????????????,?,?????????????????6mK(??????-273.144?),?????????????
??,????,????????????????????????????????,??????????“????????????????”(???????????????????????273.15?)?????????????,?????????????????????????????,??????????????????????????
??,?????????????????,??1mK,????????????????????????????6mK-200mK????,???,??????????????????????????????????????????????,?20mK??????????????????????,??????????????????????????,????????????????,????,???????????????
??,???????????????????,??????????????,????????(??????????????) ??????????:?????????????????????????????????