physical state

例句：

1. 1.The physical state of the material is important for its performance.
   该物质的物理状态对其性能至关重要。
2. 2.The researcher studied the chemical properties of the substance.
   研究者研究了这种物质的化学性质。
3. 3. The scientists observed the physical state of the liquid as it cooled.
   科学家们观察了液体冷却时的物理状态。