Pressure temperature and composition play as three dominate parameters to determine the state of substance . The change of temperature and composition is the usual method for studying the property of matter and for the improvement .

压强、温度和成分是物质存在的 三 个基本 状态参数，改变温度或物质的成分是研究 物质性质及改善其性能的常用手段。

Solid liquid and gas are the three state of matter .

固体，液体和气体是 物质 的 三 种 状态。