The paper discusses demonstrating method of Joule law and points out existing problems in the general procedure as well as the improvement measure.
讨论焦耳定律的演示方法，指出常规方法存在的问题，提出改进方法。
The three laws including Joule law, Gay-Lussac law and charles law are simultaneously worked out by use of first , second law of thermodynamics and Boyle law.
利用热力学第一、二定律和玻意耳定律，同时导出了焦耳定律、盖。吕萨克定律和查理定律。
The three laws including Joule law, Gay-Lussac law and charles law are simultaneously worked out by use of first , second law of thermodynamics and Boyle law.
利用热力学第一、二定律和玻意耳定律，同时导出了焦耳定律、盖。吕萨克定律和查理定律。
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