quasi stationary state

简明释义

准稳状态

英英释义

例句

1.The fluid dynamics study focused on conditions under which the flow could be approximated as a quasi stationary state 准静态状态 for simplification.

流体动力学研究集中在流动在何种条件下可以被近似为quasi stationary state 准静态状态以简化计算。

2.In economics, a market can be considered to be in a quasi stationary state 准静态状态 when prices change gradually without sudden fluctuations.

在经济学中，当价格逐渐变化而没有突然波动时，市场可以被认为处于quasi stationary state 准静态状态。

3.In thermodynamics, a system can be described as being in a quasi stationary state 准静态状态 when it undergoes changes slowly enough that it remains close to equilibrium.

在热力学中，当一个系统缓慢变化时，可以描述为处于quasi stationary state 准静态状态，因为它保持接近平衡。

4.The climate model assumes that the atmosphere is in a quasi stationary state 准静态状态 over long periods for accuracy in predictions.

气候模型假设大气在较长时间内处于quasi stationary state 准静态状态以提高预测的准确性。

5.During the experiment, we ensured that the reaction reached a quasi stationary state 准静态状态 before taking measurements.

在实验过程中，我们确保反应在进行测量之前达到了quasi stationary state 准静态状态。

作文

In the realm of physics and other scientific disciplines, the concept of a quasi stationary state plays a crucial role in understanding dynamic systems. A quasi stationary state refers to a condition where a system appears to be stable and unchanging over time, even though it is not in a true equilibrium. This state is particularly relevant in situations where external forces are acting on the system, causing it to evolve slowly compared to its internal dynamics. For example, consider a simple pendulum swinging back and forth. When the pendulum is released from a certain height, it will oscillate, but if we observe it over a long period, it might seem as if it is maintaining a steady average position due to the damping effects of air resistance. This is a practical illustration of a quasi stationary state.The significance of the quasi stationary state extends beyond classical mechanics into fields like thermodynamics and quantum mechanics. In thermodynamics, systems can reach a quasi stationary state when they are subjected to constant external conditions, such as temperature or pressure. Although the internal energy levels of the particles may fluctuate, the overall macroscopic properties of the system remain relatively constant. This is often observed in chemical reactions that occur at a slow rate, where the concentrations of reactants and products stabilize over time, leading to a quasi stationary state of reaction equilibrium.In quantum mechanics, the quasi stationary state concept is vital for understanding metastable states. These are states that are not the lowest energy configuration but can exist for a significant amount of time before transitioning to a more stable state. An example of this is an electron in an excited state within an atom. While it is not in its ground state, it can exist in this excited state for a considerable duration, during which the atom can be considered to be in a quasi stationary state. The electron's eventual transition back to the ground state releases energy, often in the form of light, illustrating how quasi stationary states can have observable consequences.Moreover, the quasi stationary state concept is not limited to physical sciences; it can also be applied in economics and social sciences. For instance, in economic models, a market may reach a quasi stationary state where supply and demand appear balanced over time, despite underlying fluctuations in individual transactions. This can lead to the assumption that the market is stable, even when it is subject to various external shocks and changes. Understanding these quasi stationary states helps economists predict future trends and make informed decisions.In conclusion, the quasi stationary state is a multifaceted concept that provides valuable insights across various disciplines. By recognizing that systems can exhibit stability while still undergoing change, scientists and researchers can better analyze and predict the behavior of complex systems. Whether in physics, chemistry, or economics, the idea of a quasi stationary state allows for a deeper understanding of the delicate balance between stability and change, which is fundamental to many natural and social phenomena.

在物理学和其他科学领域中，准静态状态的概念在理解动态系统方面发挥着至关重要的作用。准静态状态指的是一个系统在时间上看似稳定且不变的状态，即使它并不处于真正的平衡之中。这个状态在外部力量作用于系统时尤为相关，导致其相对于内部动态缓慢演变。例如，考虑一个简单的摆锤前后摆动。当摆锤从某个高度释放时，它会发生振荡，但如果我们在较长时间内观察它，可能会发现由于空气阻力造成的阻尼效应，它似乎保持了一个稳定的平均位置。这是准静态状态的一个实际例证。准静态状态的重要性不仅限于经典力学，还延伸到热力学和量子力学等领域。在热力学中，当系统受到恒定的外部条件（如温度或压力）影响时，可以达到准静态状态。尽管粒子的内部能量水平可能会波动，但系统的整体宏观属性仍然相对恒定。这通常发生在反应速率较慢的化学反应中，其中反应物和产物的浓度随着时间的推移而稳定，从而导致反应平衡的准静态状态。在量子力学中，准静态状态的概念对于理解亚稳态至关重要。这些状态不是最低能量配置，但可以在相当长的时间内存在，然后转变为更稳定的状态。例如，原子中的电子处于激发态。虽然它不在基态，但它可以在这个激发态中存在相当长的时间，在此期间，原子可以被认为处于准静态状态。电子最终回到基态时释放出能量，通常以光的形式，说明了准静态状态可以产生可观察的后果。此外，准静态状态的概念不仅限于自然科学；它也可以应用于经济学和社会科学。例如，在经济模型中，市场可能达到一个准静态状态，在这个状态下，供需在时间上看似平衡，尽管个别交易中存在潜在波动。这可能导致人们假设市场是稳定的，即使它受到各种外部冲击和变化的影响。理解这些准静态状态有助于经济学家预测未来趋势并做出明智的决策。总之，准静态状态是一个多面的概念，为各个学科提供了宝贵的见解。通过认识到系统可以在经历变化的同时表现出稳定性，科学家和研究人员能够更好地分析和预测复杂系统的行为。无论是在物理学、化学还是经济学中，准静态状态的概念都使我们能够更深入地理解稳定与变化之间的微妙平衡，这对于许多自然和社会现象都是基础。