thermodynamic state

简明释义

热力状态

英英释义

例句

1.Understanding the thermodynamic state (热力学状态) of a gas helps in predicting its behavior under different pressures and temperatures.

理解气体的热力学状态有助于预测其在不同压力和温度下的行为。

2.The thermodynamic state (热力学状态) of a system can be represented on a pressure-volume diagram.

系统的热力学状态可以在压力-体积图上表示。

3.The engine's performance is heavily influenced by its thermodynamic state (热力学状态), which determines efficiency and power output.

发动机的性能受到其热力学状态的重大影响，这决定了效率和功率输出。

4.In a refrigeration cycle, the thermodynamic state (热力学状态) of the refrigerant changes as it absorbs and releases heat.

在制冷循环中，制冷剂的热力学状态随着吸收和释放热量而变化。

5.During the phase transition, the thermodynamic state (热力学状态) of water changes from liquid to vapor.

在相变过程中，水的热力学状态从液体转变为蒸气。

作文

The concept of a thermodynamic state is fundamental in the study of thermodynamics, which is the branch of physics that deals with heat, work, temperature, and the statistical behavior of systems. A thermodynamic state refers to the specific condition of a system as defined by its properties such as temperature, pressure, volume, and internal energy. Understanding this concept is crucial for scientists and engineers who work with various physical systems, from engines to refrigerators, as it helps them predict how these systems will behave under different conditions.In thermodynamics, a system can be defined as any quantity of matter or region in space that we choose to study. The thermodynamic state of this system is described by its macroscopic properties. For example, consider a gas contained in a cylinder. The thermodynamic state of the gas can be characterized by its temperature (how hot or cold it is), pressure (the force exerted by the gas molecules on the walls of the cylinder), and volume (the space occupied by the gas). These properties are interrelated; changes in one can affect the others, which is a key principle in thermodynamics.One of the most important aspects of the thermodynamic state is that it can be represented on a diagram known as a phase diagram. This diagram illustrates the different phases of a substance (solid, liquid, gas) and the transitions between these phases under varying conditions of temperature and pressure. By analyzing the phase diagram, one can determine the thermodynamic state of a substance at any given point, which is essential for understanding processes such as boiling, melting, and condensation.Moreover, the thermodynamic state is not static; it can change due to external influences. For instance, if heat is added to a gas, its temperature increases, leading to a change in its thermodynamic state. This change can be described using various thermodynamic laws, such as the first law of thermodynamics, which states that energy cannot be created or destroyed, only transformed from one form to another. This principle helps us understand how energy flows into or out of a system and how that affects its thermodynamic state.In practical applications, the knowledge of a system's thermodynamic state allows engineers to design more efficient machines and processes. For example, in an internal combustion engine, understanding the thermodynamic state of the fuel-air mixture at various stages of combustion enables engineers to optimize performance and reduce emissions. Similarly, in refrigeration, knowing the thermodynamic state of refrigerants at different points in the cycle helps improve the efficiency of cooling systems.In conclusion, grasping the concept of a thermodynamic state is essential for anyone involved in the sciences and engineering. It provides a framework for analyzing and predicting the behavior of physical systems under various conditions. By studying the thermodynamic state of a system, we can gain insights into the fundamental principles that govern energy transfer and transformation, ultimately leading to advancements in technology and improvements in our daily lives.

“热力学状态”这一概念在热力学研究中至关重要。热力学是物理学的一个分支，涉及热、功、温度以及系统的统计行为。“热力学状态”指的是一个系统的特定条件，通过其温度、压力、体积和内能等属性来定义。理解这一概念对从事各种物理系统工作的科学家和工程师至关重要，因为它帮助他们预测这些系统在不同条件下的行为。在热力学中，系统可以定义为我们选择研究的任何物质量或空间区域。该系统的“热力学状态”由其宏观属性描述。例如，考虑一个气体被封闭在气缸中。气体的“热力学状态”可以通过其温度（冷热程度）、压力（气体分子对气缸壁施加的力）和体积（气体占据的空间）来表征。这些属性是相互关联的；一个属性的变化可能影响其他属性，这是热力学中的一个关键原则。“热力学状态”的一个重要方面是它可以在一个称为相图的图表上表示。该图表展示了物质的不同相（固态、液态、气态）及在不同温度和压力条件下这些相之间的转变。通过分析相图，可以确定物质在任何给定点的“热力学状态”，这对于理解如沸腾、熔化和凝结等过程至关重要。此外，“热力学状态”并不是静态的；它可以由于外部影响而改变。例如，如果向气体中添加热量，其温度会升高，从而导致其“热力学状态”的变化。这种变化可以通过各种热力学定律来描述，例如热力学第一定律，该定律指出能量不能被创造或毁灭，只能从一种形式转化为另一种形式。这一原则帮助我们理解能量如何流入或流出系统，以及这对其“热力学状态”的影响。在实际应用中，了解系统的“热力学状态”使工程师能够设计出更高效的机器和过程。例如，在内燃机中，了解燃料-空气混合物在燃烧各个阶段的“热力学状态”使工程师能够优化性能并减少排放。同样，在制冷过程中，了解制冷剂在循环不同点的“热力学状态”有助于提高制冷系统的效率。总之，掌握“热力学状态”的概念对于任何从事科学和工程的人来说都是必不可少的。它提供了分析和预测物理系统在各种条件下行为的框架。通过研究系统的“热力学状态”，我们可以深入了解支配能量转移和转化的基本原理，最终推动技术进步，提高我们的日常生活。