That's the first law of thermodynamics.
这是热力学第一定律。
The idea that energy is conserved is the first law of thermodynamics.
能量守恒这一概念是热力学的第一定律。
PROFESSOR BAWENDI: Last time you talked about the first law of thermodynamics.
教授：上一次我们谈到,热力学第一定律。
Fairly powerful statement, and that's another form of the first law of thermodynamics.
这是一个相当有用的表述，是热力学第一定律的另外一种形式。
The first law of thermodynamics states that energy can neither be created nor destroyed.
热力学第一定律说明，能量既不能被创造，也不能被破坏。
This is an abstract and powerful mathematical statement of the first law of thermodynamics.
这是热力学第一定律的一个抽象，而且具有很强数学性的表述。
The heating effect of capacitors in operation is given based on the first law of thermodynamics.
本文用热力学第一定律给出电容器在工作时产生的热效应。
Then making use of the first law of thermodynamics, we conclude that the Hawking temperature is invariant.
然后利用热力学第一定律，可以得出结论，黑洞的温度并没有被修正。
So he grabbed his thermometer, and went and made a couple of measurements and discovered the first law of thermodynamics.
所以他拿来了温度计，进行测量,后来就发现了热力学第一定律。
The symmetry of the permittivity tensor is found to be based on the first law of thermodynamics and the non-wastage condition.
由热力学第一定律及无损条件导出了介电张量的对称性；
If your body is consuming fewer calories than it's expending, something's got to go (see God, "The First Law of Thermodynamics").
如果你的身体消耗更少的热量比它的花费，有什么地方去了(见上帝，他说：“热力学第一定律”)。
A paradox of work done by friction is clarified, and the general format of principle of energy-work and the first law of thermodynamics are presented.
本文澄清了一个关于摩擦力做功的佯谬，并提出了功能原理与热力学第一定律的一般形式。
Molar heat capacities in the processes of quasi static state of perfect gases are discussed according to the first law of thermodynamics in this paper.
从热力学第一定律出发，详细讨论了理想气体准静态过程中的摩尔热容。
The essential of entropy in the dissipative structure is the macroscopically order and energy transformation, and embodies the first law of thermodynamics.
耗散结构中熵的实质是宏观有序和能量转换，体现的是热力学第一定律。
This paper discusses the first law of thermodynamics of the white hole, so as to provide a theoretical basis for the possibility of existence of white hole.
有待实践检验。本文从形式上给出了白洞的热力学第一定律，试图为白洞的存在提供一种理论上的可能性。
Deeply understand the essence and expressions of the first law of thermodynamics; Using the expression of the first law to solve related problems occurred in practical project.
深刻理解热力学第一定律的实质，熟练掌握热力学第一定律的表达式。正确地利用热力学第一定律表达式解决工程实践中的有关问题。
Nevertheless, while there is a lot of scepticism in, around and about climate science, none of it is aimed at the first law of thermodynamics, which says that energy cannot be created or destroyed.
不过，尽管气候学界内部和周围存在众多质疑，却没有一个是针对热力学第一定律的。 热力学第一定律认为，人类既不能创造能量，也不能消灭能量。
Results of the first law thermodynamics analysis, exergy analysis and energy grade theory show that the primary energy ratio of GEHP is 1.
对燃气机热泵的热力学第一定律、分析和能级平衡理论分析结果表明：其一次能源利用率可达1。
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 state function, entropy, is introduced by the means of a perfect gas behavior, and the second law of thermodynamics is demonstrated based on the first law.
本文以理想气体的行为为手段引出熵函数，并以热力学第一定律为基础，论证了熵增大原理。
In this paper the definition of temperature founded on the first law and second law of thermodynamics is evolved by the operation of reversible heat engine.
本文以热力学第一定律和第二定律为基础，用可逆热机的运转来建立温度概念。
Finally, according to the second law of thermodynamics and China's practice, Key measures we first should adopt for effectiveness use source of energy are proposed.
最后根据热力学第二定律，从我国实际出发，提出为有效地利用能源首先应该采取的关键措施。
Finally, according to the second law of thermodynamics and China's practice, Key measures we first should adopt for effectiveness use source of energy are proposed.
最后根据热力学第二定律，从我国实际出发，提出为有效地利用能源首先应该采取的关键措施。
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