phase state

例句：

1. 1.The phase transition in the material is crucialfor its functionality.
   该材料中的相变对它的功能性至关重要。
2. 2. During the transition fromone phase to another, there are oftensignificant changes in properties.
   从一个相态过渡到另一个相态时，通常会出现显著的属性变化。
3. 3. Theresearcher found that thephase state of the material couldbe influenced by external factors.
   研究人员发现，材料的相态可以受到外部因素的影响。