????:1??????????:??????

2???????????

3????????

4????????k????

5?????qt??

?6????11????????????? (???????????????? ????)???11??,????????????????????????SL1000?????,??????

??????????????,????“?”,???

????????????,?(??????)???????,????????????840??,????100+??????????????????

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????:“???????????????????????SL400??100mK(-273.05?)??????400??????????,????????????????SL1000??1000??,?????1.5??????3????????????????”

???????????????,????SL1000????????????????????????????????????????????????????,??,??“??”???????????????????“????????????????????”?(?????????????) ??:???????