metastable

简明释义

英[ˌmetəˈsteɪbəl]美[ˌmetəˈsteɪbl]

adj. [物][化学] 亚稳的；相对稳定的

英英释义

单词用法

同义词

反义词

例句

1.Because gas hydrates are metastable, changes of pressure and temperature may easily affect their stability.

天然气水合物是一种亚稳态物质，极易受到温度和压力条件的影响。

2.The decomposition heat for metastable super-cooled liquid is greater than that of crystallized solid.

亚稳态的过冷液体比结晶态有较大的分解热。

3.A metastable phase exists during the refrigerant flowing through the capillary tube.

制冷剂在通过毛细管过程中，存在一个不稳定的亚稳态流动阶段。

4.The deformation induced martensite in metastable austenite stainless steels affects their physical and chemical properties.

亚稳奥氏体不锈钢冷变形后产生形变诱发马氏体，影响其物理和化学性能。

5.The metastable zone is narrowed, and the crystal growth rate is increased in the presence of calcium acetate as an impurity.

醋酸钙杂质的存在使木糖溶液介稳区变窄，晶体生长速率加快。

6.X-ray diffraction and analysis shows that no metastable phases are detected other than the three equilibrium phases in the tested systems.

射线衍射分析发现，除了这三个应该出现的平衡相之外，没有探测到其它亚稳相。

7.The stress corrosion cracking of metastable austenitic stainless steel has been investigated.

研究了亚稳态奥氏体不锈钢的应力腐蚀开裂。

8.It is found that the current fluctuations of the metastable pitting occurred with a characteristic of quick increase and slow decrease.

实验发现亚稳态电流波动峰具有快速上升、缓慢下降的特点。

9.Certain configurations in computer simulations can be metastable 亚稳态, allowing systems to exist in multiple states without transitioning.

计算机模拟中的某些配置可以是metastable 亚稳态，允许系统在多个状态中存在而不发生转变。

10.In physics, a certain state of matter can be described as metastable 亚稳态 when it remains stable under specific conditions but can transition to a more stable state with a small disturbance.

在物理学中，某种物质的状态可以被描述为metastable 亚稳态，当它在特定条件下保持稳定，但在小扰动下可能转变为更稳定的状态。

11.The metastable 亚稳态 phase of the material is crucial for its use in electronics.

材料的metastable 亚稳态相对于其在电子产品中的应用至关重要。

12.In chemical reactions, intermediates are often in a metastable 亚稳态 before they convert into products.

在化学反应中，中间体通常处于metastable 亚稳态，然后转化为产物。

13.The glassy state of some polymers is considered metastable 亚稳态 because it can change to a crystalline form over time.

某些聚合物的玻璃态被认为是metastable 亚稳态，因为它可以随着时间的推移转变为结晶形态。

作文

In the realm of physics and chemistry, the term metastable refers to a state of a system that is stable under certain conditions but can transition to a more stable state when perturbed. This concept is crucial in understanding various phenomena in nature, from the behavior of materials to the dynamics of chemical reactions. For example, consider a ball resting at the top of a hill. The ball is in a metastable position because it can remain there indefinitely unless acted upon by an external force. Once it rolls down the hill, it reaches a more stable position at the bottom. The idea of metastable states is not limited to physical systems; it also applies to biological processes. In the context of cellular biology, certain cellular states can be considered metastable. For instance, stem cells are often described as existing in a metastable state, where they can differentiate into various cell types depending on the signals they receive from their environment. This flexibility is vital for development and tissue repair, showcasing how metastable states are essential for life.In the field of materials science, the concept of metastable phases plays a significant role in the design of new materials. For instance, engineers often create alloys that exist in a metastable state, which can provide desirable properties such as increased strength or resistance to corrosion. These materials may not be the most thermodynamically stable configurations, but their metastable nature allows them to perform exceptionally well under specific conditions.Moreover, the concept of metastable states is also prevalent in the world of technology, particularly in computing and information storage. For example, certain types of memory devices, like flash memory, rely on metastable states to store data. The information is retained in a metastable configuration until it is rewritten or deleted, demonstrating how this principle can be harnessed for practical applications.Understanding metastable states is crucial for scientists and engineers as they work to innovate and solve complex problems. By manipulating these states, they can develop new technologies, enhance material properties, and gain insights into biological processes. The study of metastable systems continues to be a vibrant area of research, with implications across multiple disciplines.In conclusion, the term metastable encompasses a wide range of phenomena that are significant in both natural and engineered systems. Whether it is in the stability of a chemical compound, the differentiation of stem cells, or the performance of advanced materials, metastable states play a pivotal role in our understanding of the world. As we continue to explore and manipulate these states, we open up new possibilities for innovation and discovery, highlighting the importance of this concept in modern science and technology.

在物理和化学领域，术语metastable指的是系统在某些条件下稳定，但在受到扰动时可以转变为更稳定状态的状态。这个概念对于理解自然界中的各种现象至关重要，从材料的行为到化学反应的动态。例如，考虑一个球静止在山顶。这个球处于一个metastable位置，因为它可以在这里无限期地保持，除非受到外力的作用。一旦它滚下山坡，就会到达底部的更稳定位置。metastable状态的概念不仅限于物理系统；它也适用于生物过程。在细胞生物学的背景下，某些细胞状态可以被视为metastable。例如，干细胞通常被描述为处于metastable状态，具体取决于它们从环境中接收到的信号，可以分化成各种细胞类型。这种灵活性对于发育和组织修复至关重要，展示了metastable状态对生命的重要性。在材料科学领域，metastable相的概念在新材料设计中发挥着重要作用。例如，工程师们经常制造处于metastable状态的合金，这可以提供所需的性质，如增加强度或抗腐蚀性。这些材料可能不是热力学上最稳定的配置，但它们的metastable特性使它们在特定条件下表现出色。此外，metastable状态的概念在技术世界中也很普遍，特别是在计算和信息存储方面。例如，某些类型的存储设备，如闪存，依赖于metastable状态来存储数据。信息保留在metastable配置中，直到被重写或删除，展示了这一原理如何被用于实际应用。理解metastable状态对科学家和工程师来说至关重要，因为他们努力创新和解决复杂问题。通过操纵这些状态，他们可以开发新技术，增强材料特性，并深入了解生物过程。对metastable系统的研究仍然是一个充满活力的研究领域，涉及多个学科的影响。总之，术语metastable涵盖了一系列在自然和工程系统中具有重要意义的现象。无论是在化合物的稳定性、干细胞的分化还是先进材料的性能方面，metastable状态在我们理解世界中发挥着关键作用。随着我们继续探索和操纵这些状态，我们为创新和发现开辟了新的可能性，突显了这一概念在现代科学和技术中的重要性。