nonsteady state

简明释义

不稳定状态

英英释义

例句

1.When the temperature changes rapidly, the system enters a nonsteady state 非稳态 until thermal equilibrium is reached.

当温度快速变化时，系统进入非稳态 nonsteady state，直到达到热平衡。

2.The fluid flow in the pipe is considered to be in a nonsteady state 非稳态 when the velocity varies with time.

当管道中的流体速度随时间变化时，流体流动被认为处于非稳态 nonsteady state。

3.During the initial phase of the experiment, the system was in a nonsteady state 非稳态 due to sudden changes in pressure.

在实验的初始阶段，由于压力的突然变化，系统处于非稳态 nonsteady state。

4.The nonsteady state 非稳态 conditions in the reactor can lead to fluctuations in product yield.

反应器中的非稳态 nonsteady state 条件可能导致产品产量的波动。

5.In thermodynamics, we often analyze systems that are in a nonsteady state 非稳态 during the heating or cooling process.

在热力学中，我们通常分析在加热或冷却过程中处于非稳态 nonsteady state的系统。

作文

In the study of physics and engineering, the term nonsteady state refers to a system that is not in equilibrium. This means that the properties of the system, such as temperature, pressure, or concentration, are changing with time. Understanding nonsteady state conditions is crucial in various applications, from chemical reactions to fluid dynamics. For instance, when a chemical reaction occurs, the concentrations of reactants and products change over time until they reach a state of equilibrium. During this process, the system is said to be in a nonsteady state. Consider the example of a boiling pot of water. Initially, the water is at room temperature, but as heat is applied, its temperature increases. This transition from room temperature to boiling is a classic illustration of a nonsteady state. Throughout this process, the temperature is not constant; it changes continuously until it reaches 100 degrees Celsius. At this point, the system can be considered to have reached a steady state, where the temperature remains constant despite ongoing heat input. The concept of nonsteady state is also prevalent in the field of thermodynamics. When analyzing heat engines, for example, engineers must account for the nonsteady state behavior during the startup phase. As the engine warms up, the temperatures and pressures within the system fluctuate, and it is only after some time that these variables stabilize into a steady state. Ignoring the nonsteady state dynamics can lead to inaccurate predictions of engine performance and efficiency. In environmental science, the nonsteady state conditions are often observed in ecosystems undergoing change. For example, after a forest fire, the area does not immediately return to its original state. Instead, it goes through a series of nonsteady state phases as new plants grow, animals return, and the ecosystem gradually recovers. Each stage presents different ecological dynamics, illustrating how systems can evolve over time before reaching a new equilibrium. In conclusion, the understanding of nonsteady state phenomena is essential across multiple disciplines. Whether in physics, engineering, or environmental science, recognizing that systems often do not remain static helps scientists and engineers design better experiments, predict outcomes more accurately, and understand the complexities of nature. As we continue to explore the world around us, the implications of nonsteady state conditions will remain a significant area of study, influencing both theoretical research and practical applications.

在物理和工程学的研究中，术语非稳态指的是一个不处于平衡状态的系统。这意味着系统的性质，如温度、压力或浓度，随着时间而变化。理解非稳态条件在各种应用中至关重要，从化学反应到流体动力学。例如，当发生化学反应时，反应物和产物的浓度会随时间变化，直到达到平衡状态。在此过程中，系统被称为处于非稳态。 考虑一个烧水锅的例子。最初，水处于室温，但随着热量的施加，其温度升高。这种从室温到沸腾的转变是非稳态的经典例证。在这个过程中，温度不是恒定的；它不断变化，直到达到100摄氏度。在这一点上，系统可以被认为达到了稳态，在这种情况下，尽管持续输入热量，温度仍然保持恒定。 非稳态的概念在热力学领域也很常见。例如，在分析热机时，工程师必须考虑启动阶段的非稳态行为。当发动机升温时，系统内的温度和压力波动，只有经过一段时间，这些变量才会稳定到稳态。如果忽视非稳态动态，可能会导致对发动机性能和效率的预测不准确。 在环境科学中，通常会观察到生态系统经历变化时的非稳态条件。例如，在森林大火后，该地区不会立即恢复到原始状态。相反，它经历了一系列的非稳态阶段，新植物生长，动物返回，生态系统逐渐恢复。每个阶段呈现出不同的生态动态，说明系统如何随着时间的推移而演变，最终达到新的平衡。 总之，对非稳态现象的理解在多个学科中都是必不可少的。无论是在物理学、工程学还是环境科学，认识到系统往往不是静态的，有助于科学家和工程师设计更好的实验，更准确地预测结果，并理解自然的复杂性。随着我们继续探索周围的世界，非稳态条件的影响将仍然是一个重要的研究领域，影响着理论研究和实际应用。