Then if I change to the triple point, where the number of phases is three, then the number of degrees of freedom 2 is one minus three is minus two, two plus two is zero.

如果考虑三相点，这里有三个相，那么自由度的数目，为1减去3得负，再加上2等于零。

youdao

Then if I change to the triple point, where the number of phases is three, then the number of degrees of freedom 2 is one minus three is minus two, two plus two is zero.

如果考虑三相点，这里有三个相，那么自由度的数目，为1减去3得负，再加上2等于零。

youdao