Under some conditions, these particles may grow larger and form solid pieces of ice,or hail.

VOA: special.2010.01.05

Maybe you're not looking at a reaction, but you've got some new compound, and you're looking at it go from liquid to solid or to gas.

也许你研究的不是一个反应,但你得到了一种新的化合物,你看着它从液体变成了固体或气体。

麻省理工公开课 - 热力学与动力学课程节选

A molar enthalpy of or whatever, iron, as a solid at 298.15 Kelvin is zero.

98。15K下固态铁的，摩尔焓是零。

麻省理工公开课 - 热力学与动力学课程节选