决定物体内能的状态参量

有一种不正确的观点“温度升高物体内能增加”。甚至有的教材也有类似的文字叙述。究其原因是不清楚物体的内能概念，误以为物体的内能仅与温度有关。本文从微观理论、宏观实验和范氏气体实例三方面论述一般物体的内能不仅与温度有关，还与体积有关。说明温度升高物体内能不一定增加。

State Parameter Determining Internal Energy of Object

There is a wrong viewpoint, i. e. "When the temperature rises, the internal energy of object rises", which can be found in some textbooks. It's due to the ambiguity of the concept of internal energy of object and misunderstanding of its relationship with temperature only. This paper has expouded the relationship of it with volume also besides temperature from micro-theory, macro-experforent and van der walls gas example and has made it clear that the internal energy of objects may not increat when the temperature rises.