热力学定律

The processes of life must obey the law of conservation of matter and the two laws of thermodynamics.

生活的过程必须服从物质守恒定律和二个热力学定律。

Ecosystems and the laws of thermodynamics The first law of thermodynamics states that energy can neither be created nor destroyed.

生态系统与热力学定律热力学第一定律说明，能量既不能被创造，也不能被破坏。

Based on the first and second law of thermodynamics, entropy generation theory is applied to establish vortex tube model.

根据热力学定律，采用最小熵产分析方法，建立了涡流管的热力学模型，得出了产生所需冷热端温度同最小压比之间的函数关系，并在h—s图上表示出涡流管能量分离热力过程。

For the heavy structure and complex performances of the hybrid system, based on the photovoltaic effect, the state equation of ideal gas, mass and energy conservation equations, physicochemical principles, power transformation relations, flow and transmission of the heat energy, first give a set of proper assumptions and simplifications, then a set of dynamic model of all subsystem are established completely and detailed.

由于PVFC联合发电系统结构复杂，涉及到电化学、传质学、传热学等多门学科知识，以及光生伏打原理、质量守恒、动量守恒、能量守恒、第一热力学定律等多种原理和定律，所以，首先对各子系统在不影响系统性能的基础上进行适当的假设和简化，然后根据各种原理和定律分别建立各子系统的动态数学模型。

The movement system of energy and material of natural world based on the law of thermodynamics.

自然界中的能量与物质系统的运动是遵循热力学定律的。

The theory is based on the laws of thermodynamics and the pseudo elastic postulate.

理论的基础是热力学定律及虚弹性假设。

The second Law of Thermodynamics states that thermal transfer occurs in the direction of decreasing temperature.

第二个热力学定律阐明，热量调动发生在越来越少的温度的方向。

On the view of entropy, the action for human to explore and to use the nature resource can enhance the speed of entropy growing, which is harmful to the environmental system＇s stableness and regulation.

自然界中的能量与物质系统的运动是遵循热力学定律的0从熵的角度来看，现在人类开发利用资源的方式，使系统熵增加速，不利于环境系统的有序和稳定。

The discussion is focused on the determination of the minimum air rate when there is reservoir fluid influx during air drilling, injection pressure at standpipe, and bit nozzle pressure.

应用气体状态方程、热力学定律对空气钻井中各个流动参数进行分析，重点讨论储层流体涌入时空气钻井过程中最小空气流量的确定，以及立管注入压力和钻头喷嘴压力等问题。

Treatment of the laws of thermodynamics and their applications to equilibrium and the properties of materials.

热力学定律的论述以及它们在平衡过程和材料性质中的应用。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐