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→卡诺原理 Carnot's principle
用现代术语，卡诺原理可能更为准确:
用现代术语，卡诺原理可能更为准确:
:''"The efficiency of a quasi-static or reversible Carnot cycle depends only on the temperatures of the two heat reservoirs, and is the same, whatever the working substance. A Carnot engine operated in this way is the most efficient possible heat engine using those two temperatures."
:''"The efficiency of a quasi-static or reversible Carnot cycle depends only on the temperatures of the two heat reservoirs, and is the same, whatever the working substance. A Carnot engine operated in this way is the most efficient possible heat engine using those two temperatures."
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:准静态卡诺循环或可逆卡诺循环的效率只取决于两种热源的温度，而且无论工作物质是什么，效率是相同的。使用两个热源与工作物质交换热源（一个高温热源温度<math>T_1</math>和一个低温热源温度<math>T_2</math>)的卡诺热机是最有效的热机。<ref>Clifford Truesdell(1980), Chapter 5.</ref><ref>Adkins, C.J. (1968/1983), pp. 56–58.</ref><ref>Münster, A. (1970), p. 11.</ref><ref>Kondepudi, D., Ilya Prigogine(1998), pp.67–75.</ref><ref>Lebon, G., Jou, D., Casas-Vázquez, J. (2008), p. 10.</ref><ref>Eu, B.C. (2002), pp. 32–35.</ref>"
:准静态卡诺循环或可逆卡诺循环的效率只取决于两种热源的温度，而且无论工作物质是什么，效率是相同的。使用两个热源与工作物质交换热源（一个高温热源温度<math>T_1</math>和一个低温热源温度<math>T_2</math>)的卡诺热机是最有效的热机。<ref>Clifford Truesdell(1980), Chapter 5.</ref><ref>Adkins, C.J. (1968/1983), pp. 56–58.</ref><ref>Münster, A. (1970), p. 11.</ref><ref>Kondepudi, D., Ilya Prigogine(1998), pp.67–75.</ref><ref>Lebon, G., Jou, D., Casas-Vázquez, J. (2008), p. 10.</ref><ref>Eu, B.C. (2002), pp. 32–35.</ref>"
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===克劳修斯表述 Clausius statement===
===克劳修斯表述 Clausius statement===