题目内容
No system can take heat from a single heat reservoir (热源) and convert it entirely into work without additional net changes in the system or its surroundings.
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The first law of thermodynamics is an expression of the principle of conservation of energy. It states that energy can be transformed (changed from one form to another), but cannot be created or destroyed.
Thermodynamics, science of the relationship between heat, work, temperature, and energy. In broad terms, thermodynamics deals with the transfer of energy from one place to another and from one form to another.
Thermodynamic equilibrium, in which there is no tendency for the state of a system to change spontaneously (自发地). 热力学平衡,其中系统状态不存在自发改变的趋势。
When the wave propagates (传播) in the medium, the kinetic energy and potential energy of the volume of elements (体积微元) have the same changing laws.
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