dislocation centre

简明释义

位错中心

英英释义

例句

1.Residents were directed to the nearest dislocation centre after the hurricane warning was issued.

在发布飓风警报后，居民们被引导到最近的安置中心。

2.The dislocation centre served as a hub for coordinating relief efforts during the crisis.

在危机期间，安置中心作为协调救援工作的中心。

3.The government allocated funds to improve the facilities at the dislocation centre.

政府拨款改善安置中心的设施。

4.Volunteers at the dislocation centre provided food and shelter to those displaced by the flood.

在安置中心的志愿者为因洪水而流离失所的人们提供食物和庇护。

5.The city established a new dislocation centre to assist families affected by the recent earthquake.

该市建立了一个新的安置中心，以帮助受最近地震影响的家庭。

作文

In the realm of materials science and engineering, understanding the behavior of materials under stress is crucial. One of the key concepts that help in this understanding is the notion of a dislocation centre. A dislocation centre refers to a point within a crystal lattice where there is a disruption or misalignment of atoms. This disruption can significantly affect the mechanical properties of the material, such as its strength, ductility, and hardness. When a material is subjected to external forces, the atomic structure can experience various types of deformations. Among these, dislocations play a pivotal role. A dislocation centre essentially serves as a site where the lattice structure can deform more easily compared to other areas. This is primarily due to the fact that dislocations allow for the movement of atoms within the lattice without requiring a large amount of energy. To illustrate, consider the example of metals. When metals are deformed, they often do so by the motion of dislocations. The presence of a dislocation centre enables the metal to yield and flow under stress, which is why metals can be shaped and formed into various structures. Without these dislocation centres, metals would be much more brittle and prone to fracture, making them less useful in applications where flexibility and strength are required. The study of dislocation centres is not only important in metallurgy but also in other fields such as geology and physics. In geology, for instance, the concept can be applied to understand how rocks deform under tectonic pressures, leading to earthquakes. Similarly, in physics, the principles of dislocation theory can be utilized to explain phenomena such as plastic deformation in solids. Moreover, the manipulation of dislocation centres has practical implications in engineering and technology. By controlling the density and distribution of dislocations within a material, engineers can enhance its properties. For example, processes like work hardening or alloying can increase the number of dislocation centres, thereby improving the strength of the material. In conclusion, the concept of a dislocation centre is fundamental in understanding the mechanical behavior of materials. It highlights the importance of atomic-level interactions in determining the macroscopic properties of materials. As we continue to advance in fields like materials science and engineering, the knowledge of dislocation centres will remain vital in developing new materials and improving existing ones. Understanding how to manipulate these centers can lead to innovations that enhance the performance and durability of materials used in countless applications, from construction to electronics. Ultimately, the study of dislocation centres exemplifies the intricate relationship between atomic structure and material properties, showcasing the complexity and beauty of the physical world around us.

在材料科学和工程领域，理解材料在应力下的行为至关重要。帮助我们理解这一点的关键概念之一是位错中心的概念。位错中心指的是晶格中原子发生扰动或错位的点。这种扰动可以显著影响材料的机械性能，例如强度、延展性和硬度。当材料受到外部力的作用时，原子结构可能会经历各种类型的变形。在这些变形中，位错起着关键作用。位错中心本质上是一个位置，在这个位置，晶格结构比其他区域更容易发生变形。这主要是因为位错允许原子在晶格内移动，而不需要大量的能量。例如，考虑金属的例子。当金属变形时，通常是通过位错的运动来实现的。位错中心的存在使得金属在应力下屈服并流动，这就是为什么金属可以被塑造成各种结构。如果没有这些位错中心，金属将变得更加脆弱，更容易断裂，从而在需要灵活性和强度的应用中变得不那么有用。对位错中心的研究不仅在冶金学中重要，也在地质学和物理学等其他领域中具有应用意义。例如，在地质学中，这个概念可以用来理解岩石在构造压力下如何变形，导致地震。同样，在物理学中，位错理论的原理可以用来解释固体中的塑性变形等现象。此外，对位错中心的操控在工程和技术中具有实际意义。通过控制材料中位错的密度和分布，工程师可以增强其性能。例如，像加工硬化或合金化这样的过程可以增加位错中心的数量，从而提高材料的强度。总之，位错中心的概念在理解材料的机械行为中是基础性的。它强调了原子级相互作用在决定材料宏观特性中的重要性。随着我们在材料科学和工程等领域的不断进步，对位错中心的知识将继续在开发新材料和改善现有材料方面发挥重要作用。理解如何操控这些中心可以带来创新，增强用于无数应用（从建筑到电子产品）中的材料的性能和耐用性。最终，位错中心的研究展示了原子结构与材料性能之间复杂的关系，展现了我们周围物理世界的复杂性和美丽。