constant volume change

简明释义

等容变化

英英释义

例句

1.During the experiment, we maintained a constant volume change to accurately measure the gas's behavior.

在实验过程中，我们维持了恒定体积变化以准确测量气体的行为。

2.In engineering, designing a chamber with constant volume change helps optimize performance in combustion engines.

在工程中，设计一个具有恒定体积变化的腔室有助于优化燃烧发动机的性能。

3.The constant volume change in the balloon demonstrated how gas expands when heated.

气球中的恒定体积变化展示了气体在加热时如何膨胀。

4.The gas law states that at constant volume change, pressure and temperature are directly related.

气体法则指出，在恒定体积变化下，压力和温度是成正比的。

5.In thermodynamics, a process involving a constant volume change is crucial for understanding heat transfer in closed systems.

在热力学中，涉及恒定体积变化的过程对于理解封闭系统中的热量传递至关重要。

作文

In the field of physics and engineering, the concept of constant volume change is crucial for understanding various processes and systems. This term refers to a situation where the volume of a substance remains unchanged while other properties, such as pressure and temperature, may vary. Understanding constant volume change is essential in applications ranging from thermodynamics to fluid mechanics. One of the most common examples of constant volume change occurs in closed systems, where gas is contained within a rigid container. In such systems, when heat is added, the temperature and pressure of the gas increase, but the volume does not change. This principle is described by Gay-Lussac's Law, which states that the pressure of a gas is directly proportional to its temperature when the volume is held constant. This relationship is significant in various engineering applications, including internal combustion engines, where maintaining a constant volume during certain phases of operation can lead to more efficient energy conversion. Moreover, constant volume change plays a vital role in the study of phase transitions. For example, when water is heated in a sealed container, it may transition from liquid to gas without any change in the volume of the container. The pressure inside the container will rise as the water turns into steam, illustrating how constant volume change can lead to significant changes in other physical properties. Understanding these transitions is critical for designing safe and effective pressure vessels and boilers. In thermodynamics, the concept of constant volume change is often associated with the first law of thermodynamics, which states that energy cannot be created or destroyed, only transformed. When analyzing processes at constant volume, we can focus on how energy is transferred as heat or work. For instance, in an isochoric process (a process occurring at constant volume), all the heat added to the system increases its internal energy, which can be calculated using specific heat capacities. This understanding is essential for engineers who design systems that require precise control over temperature and pressure, such as refrigeration systems. Furthermore, constant volume change is not limited to gases; it can also apply to liquids and solids under certain conditions. For instance, in solid-state physics, materials can undergo phase changes at constant volume, affecting their electrical and mechanical properties. This is particularly relevant in materials science, where researchers aim to develop new materials with desired characteristics. In conclusion, the concept of constant volume change is fundamental to various scientific and engineering disciplines. It helps us understand how substances behave under different conditions and enables us to design systems that efficiently utilize energy. From thermodynamics to material science, grasping the implications of constant volume change is essential for anyone involved in the study or application of physical sciences. As technology continues to advance, the importance of mastering such concepts will only grow, highlighting the need for thorough education in these areas. In summary, constant volume change (恒定体积变化) refers to the scenario where the volume of a substance remains unchanged while other variables like pressure and temperature change. This principle is pivotal in various scientific and engineering contexts, allowing for a deeper comprehension of thermodynamic processes, phase transitions, and material behavior.

在物理和工程领域，恒定体积变化的概念对于理解各种过程和系统至关重要。这个术语指的是一种情况，其中物质的体积保持不变，而其他属性，如压力和温度，可能会变化。理解恒定体积变化对热力学到流体力学等应用至关重要。恒定体积变化最常见的例子发生在封闭系统中，气体被封闭在一个刚性容器内。在这样的系统中，当热量被添加时，气体的温度和压力会增加，但体积不会变化。这一原理由盖-吕萨克定律描述，该定律指出，当体积保持不变时，气体的压力与其温度成正比。这种关系在各种工程应用中非常重要，包括内燃机，在某些操作阶段保持恒定体积可以导致更高效的能量转换。此外，恒定体积变化在相变研究中起着至关重要的作用。例如，当水在密封容器中加热时，它可能在不改变容器体积的情况下从液态转变为气态。随着水变成蒸汽，容器内部的压力将上升，说明恒定体积变化如何导致其他物理属性的显著变化。理解这些转变对于设计安全有效的压力容器和锅炉至关重要。在热力学中，恒定体积变化的概念通常与热力学第一定律相关联，该定律指出能量不能被创造或消灭，只能转化。当分析恒定体积的过程时，我们可以专注于热量或功的能量转移。例如，在等容过程（在恒定体积下发生的过程）中，添加到系统的所有热量都会增加其内能，可以使用比热容进行计算。这种理解对于设计需要精确控制温度和压力的系统（如制冷系统）的工程师尤为重要。此外，恒定体积变化不仅限于气体；在某些条件下，它也可以适用于液体和固体。例如，在固态物理中，材料可以在恒定体积下经历相变，影响其电气和机械性能。这在材料科学中尤其相关，研究人员旨在开发具有所需特性的新能源材料。总之，恒定体积变化的概念是各种科学和工程学科的基础。它帮助我们理解物质在不同条件下的行为，并使我们能够设计有效利用能量的系统。从热力学到材料科学，掌握恒定体积变化的含义对任何参与物理科学研究或应用的人来说都是必不可少的。随着技术的不断进步，掌握这些概念的重要性只会增加，这突显了在这些领域进行深入教育的必要性。总而言之，恒定体积变化（constant volume change）是指物质的体积保持不变，而压力和温度等其他变量发生变化。这一原理在各种科学和工程背景下至关重要，使我们能够更深入地理解热力学过程、相变和材料行为。