first law of thermodynamics

1. 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。
2. 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。
3. Heat transfer changes the internal energy of both systems involved according to the First Law of Thermodynamics.
   传热变化的内在能量两地的法律制度所涉及的，根据热力学第一定律。
4. 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。
5. 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。
6. 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。
7. 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。
8. 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。
9. All human beings obey the first law of thermodynamics.
   所有的人都在遵循热力学的第一定律。
10. 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。
11. Energy analysis mainly have tow methods, namely enthalpy analysis on the base of using the first law of thermodynamics and exergy analysis according to the second law of thermodynamics;
    焓分析是基于热力学第一定律的分析方法；而（火用）分析则是基于热力学第二定律的分析方法。
12. In this paper, considering factors such as the explosive gas in gas generator, killing fluid, casing, formation and so on, established a mathematical calculation model of charge versus pressure based on the first law of thermodynamics, and compiled a relevant calculation software.
    将气体发生器中火药气体作为体系，把压井液、套管与地层等作为外界，根据热力学第一定律，建立了装药量与压力关系的数学计算模型，并编制了相应的计算软件。
13. 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。
14. Based on the first law of thermodynamics and the properties of ammonia-water mixtures estimated by Peng-Robinson equation of state, a thermodynamic analysis of a representative Kalina cycle-the stair distillation cycle was presented.
    从热力学第一定律的角度出发，选取P-R方程作为氨-水混合物性质的基本计算公式，对一级蒸馏Kalina循环进行了热力学分析。
15. 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。
16. The confirming method of heat transfer boundary conditions for numerical analysis of heat exchanger is put forward based on the analysis of heat transfer through the flow channels, using the first law of thermodynamics.
    基于对换热器内流体流动通道间传热的热力学第一定律的分析，提出了换热器数值计算中传热边界条件的设定方法。
17. The coefficient of performance and exergy efficiency of small cool storage air conditioning system are analysed based on the first law of thermodynamics and the second law of thermodynamics.
    基于热力学第一定律和第二定律，分析了该蓄冷空调系统的能效比（制冷系数）和有效能效率。
18. Starting from the definitions of thermodynamics function, first law of thermodynamics and wetting process, the criteria of wetting work of different wetting kinds and wetting proess automatically are derived and proved.
    从热力学函数的定义、热力学第一定律及润湿过程的定义出发，推导证明了不同润湿类型润湿功及润湿过程自动进行的判据。
19. 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。
20. On the basis of the zeroth and first law of thermodynamics, the existence of absolute temperature and entropy function has been proved, and the basic equation of thermodynamics of reversible processes has been derived;
    本文从热力学第零定律和第一定律出发，证明了绝对温度和熵函数的存在性，导出可逆过程的热力学基本方程。
21. The First Law of Thermodynamics in the P-V Graph
    热力学第一定律在p&v图上的表示
22. The Investigation of the First Law of Thermodynamics in an Open System
    开放系统中的热力学第一定律
23. We had explained a micro mean of the first law of thermodynamics in a nearly independent ideal gas system.
    以近独立单原子分子理想气体系统为研究对象，对热力学第一定律进行了微观阐释。
24. The data model of the material and energy system is established based on the mass balance and the first law of thermodynamics. The material and energy balance of various systems is analyzed.
    以物料守恒和热力学第一定律为基础，建立了各系统的物质能量系统数据模型，分析了各个系统内物料及能量的平衡状况。
25. Chapter ⅲ: By the first law of thermodynamics and the second law of thermodynamics, the working process mathematical model and the exergy analysis mathematical model of the two working modes of hybrid four-stroke compressed-air and fuel engine are respectively established.
    第三章：运用热力学第一定律和第二定律分别建立了四冲程压缩空气/燃油混合动力发动机两种工作模式的工作过程数学模型和工作过程可用能分析模型。
26. We reformulate the first law of thermodynamics in terms of quantum-mechanical operators on the parameter manifold.
    我们用量子力学的语言重新解读了热力学第一定律。
27. At present, research on energy saving air-conditioning systems remains in the first law of thermodynamics and second law of thermodynamics basis.
    而目前，空调系统的节能方法的研究，还停留在热力学第一定律和热力学第二定律的基础上。
28. It is a new technology on the base of first law of thermodynamics.
    它的原理是依据热力学第一定律，是一种全新的技术。
29. In this paper, the comprehensive evaluation of CO2 refrigerant is conducted in terms of environment protection, safety, thermophysical characters and so on. The basic trans-critical CO2 heat pump theory cycle is analyzed by using the first law of thermodynamics.
    本文从环保、安全和理化特性等方面对自然工质CO2进行了综合评价，运用热力学第一定律进行了跨临界CO2热泵的理论循环分析。
30. According to the first law of thermodynamics, LNG releases a great quantity of cold energy during gasification.
    由热力学第一定律可知，LNG气化时必然会释放大量的冷能。

noun

1. the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes

   Synonym:    conservation of energylaw of conservation of energy