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The laws of thermodynamics define physical quantities, such as temperature, energy, and entropy, that characterize thermodynamic systems at thermodynamic equilibrium. The laws describe the relationships between these quantities, and form a basis of precluding the possibility of certain phenomena, such as perpetual motion. In addition to their use in thermodynamics, they are important fundamental laws of physics in general, and are applicable in other natural sciences.

The laws of thermodynamics define physical quantities, such as temperature, energy, and entropy, that characterize thermodynamic systems at thermodynamic equilibrium. The laws describe the relationships between these quantities, and form a basis of precluding the possibility of certain phenomena, such as perpetual motion. In addition to their use in thermodynamics, they are important fundamental laws of physics in general, and are applicable in other natural sciences.

'''<font color="#ff8000"> 热力学定律The laws of thermodynamics</font>'''定义了许多物理量，如'''<font color="#ff8000"> 温度temperature</font>'''、'''<font color="#ff8000"> 能量energy</font>'''和'''<font color="#ff8000">熵 entropy</font>'''，这些物理量表征处于热力学平衡的热力学系统。这些定律描述了这些物理量之间的关系，并构成了排除某些现象的可能性的基础，例如永动机。除了在热力学中的应用之外，它们也是一般物理学中的重要基本定律，也适用于其他自然科学。

'''<font color="#ff8000"> 热力学定律The laws of thermodynamics</font>'''定义了许多物理量，如'''<font color="#ff8000"> 温度temperature</font>'''、'''<font color="#ff8000"> 能量energy</font>'''和'''<font color="#ff8000">熵 entropy</font>'''，这些物理量表征处于热力学平衡的热力学系统。这些定律描述了这些物理量之间的关系，并构成了排除某些现象的可能性的基础，例如永动机。除了在热力学中的应用之外，它们也是基础物理学中的重要基本定律，也适用于其他自然科学。

Thermodynamics has traditionally recognized three fundamental laws, simply named by an ordinal identification, the first law, the second law, and the third law.. In addition, after the first three laws were established, it was recognized that another law, more fundamental to all three, could be stated, which was named the zeroth law.

Thermodynamics has traditionally recognized three fundamental laws, simply named by an ordinal identification, the first law, the second law, and the third law.. In addition, after the first three laws were established, it was recognized that another law, more fundamental to all three, could be stated, which was named the zeroth law.

传统上，'''<font color="#ff8000"> 热力学Thermodynamics</font>'''描述了三个基本定律：（简单的按顺序命名为）第一定律、第二定律和第三定律。此外，在前三个定律确立之后，人们认识到可以提出另一个对这三个定律更为基本的定律，即第零定律。

传统上，'''<font color="#ff8000"> 热力学Thermodynamics</font>'''描述了三个基本定律：（简单的按顺序命名为）第一定律、第二定律和第三定律。此外，在前三个定律确立之后，人们认识到可以提出另一个相对于这三个定律更为基本的定律，即第零定律。