目前人们发现了几十种无机液晶物质，其中绝大多数液晶物质表现出各向同性相—向列相相变，如V_2O_5、勃姆石等；

Up to now, there have been hands of mineral liquid crystalline materials, and mostly show isotropic-nematic phase transition, such as V_2O_5, boehmite.

youdao

所以这一项我们可以替代它，用从气相到液相变化的吉布斯自由能。

So we can replace this with the change in Gibbs free energy from going from gas to liquid.

youdao

对于两个相的相变温度，这些东西应该相等。

At the phase transition temperature for the two phases, those things have to be equal.

youdao