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,然后用液氮把氢气降温到,然后就可以使用这个氢气了,想要用氢气来做焦耳-汤姆孙实验。
Then you take hydrogen you cool it would liquid nitrogen to 77, then you can use your hydrogen gas.
youdao
-
,然后用液氮把氢气降温到,然后就可以使用这个氢气了,想要用氢气来做焦耳-汤姆孙实验。
Then you take hydrogen you cool it would liquid nitrogen to 77, then you can use your hydrogen gas.
youdao