热力学定律

A If two differentials d s and dX are zero, then dX ' has to be zero too. Since d s = 0, we have s = constant, the it is a reversible adiabatic process →.

对於一个系统有两个以上的独立变数时，由於热力学第二定律，及温度是不同状态方程式中共用的变数，所以也是可积分的。

It's the first principle of aerodynamics.

这是热力学第一定律。

However, there are many differences between the static and the dynamical spcetimes. Using the the general analysis, from the unified first law of thermodynamics dE_H = TdS+WdVwhere W =(ρ- P/2 on the apparent horizon, we study the effect of Hawking radiation of the apparent horizon of the FRW universe.

其次，基于静态黑洞时空隧穿方法的一般性研究，那里黑洞的辐射率Γ-exp，是视界上热力学第一定律dE_H=TdS+PdV的必然结果，我们在动力学时空FRW宇宙背景下，发展了这种分析。

Today, his formula for entropy S is famous: S = klnΩ K is the Boltzmann constant andΩ is the number of possible microscopic states which give the same thermodynamical state that a system may be in.

在论文中，他利用原子运动轨道闭合的假设，将熵的表示与力学的最小作用原理直接联系起来，试图从纯力学的角度证明热力学第二定律。

The Encyclopaedia Britannica concludes the perpetual motion article: In the course of his long career Keely may have broken a number of laws, but he left the first and second law of thermodynamics ...

" 大英百科全书结束永动机文章："在他漫长的职业生涯Keely可能打破了一些法律，但他留下的第一和热力学第二定律。。。

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。

It is a well-known scientific law -- the second law of thermodynamics.

那就是众所周知的科学定律——热力学第二定律。

It is a well-known scientific law -- thesecond law of thermodynamics.

这就是公认的科学定律——热力学第二定律。

Firstly, according to the relationship between classic Carnot cycle and Lorenz cycle, the paper evaluates the cycle characteristics and thermodynamic properties of NARMS (Non-azeotropic mixtures), and compares the energy-saving difference between pure and mixed refrigerants. The main of factors that affect heat pump operating efficiency are analyzed in theory and using the Second Law of Thermodynamics the exergy are evaluated in components of heat pump system, in the end a conclusion is drew that all of the exergy have bearing on working fluids' properties.

本文首先从经典的Carnot逆循环与Lorenz逆循环相对关系出发，评估了非共沸混合工质循环的特点以及热力学性质；在不同环境条件下，比较了单工质与混合工质的循环特性差异；针对非共沸混合工质热泵循环效率的主要影响因素（即工质本身的热物性和系统部件特性）进行了理论分析，并利用热力学第二定律对热泵系统的各个主要部件进行了可用能分析，最终发现每一处可用能损失均与工质物性有关；在此基础上提出了减少可用能损失的方法—寻找适宜的非共沸混合工质。

2Nd Law Concepts; Reversible Heat Engines; Carnot Efficiency; Entropy; Clausius Theorem; Reversibility

热力学第二定律；可逆加热机；卡诺效率；熵；Clausius定律；可逆性〔示例，喝水的鸟

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。