extension elongation

简明释义

张拉延伸

英英释义

例句

1.In the experiment, we observed the extension elongation 延伸伸长 of the rubber band when pulled.

在实验中，我们观察到橡皮筋被拉时的延伸伸长。

2.Engineers need to consider the extension elongation 延伸伸长 of cables in their designs.

工程师在设计中需要考虑电缆的延伸伸长。

3.The scientist measured the extension elongation 延伸伸长 of the material under stress.

科学家测量了材料在压力下的延伸伸长。

4.The extension elongation 延伸伸长 of the spring was calculated to determine its elasticity.

弹簧的延伸伸长被计算出来以确定其弹性。

5.The extension elongation 延伸伸长 of metals can affect their performance in construction.

金属的延伸伸长可能会影响它们在建筑中的性能。

作文

In the world of physics and engineering, the terms 'extension' and 'elongation' often come up in discussions about materials and their properties. These two concepts are closely related, yet they have distinct meanings that are important to understand. The term extension generally refers to the act of stretching something or the state of being stretched. It is a measure of how much an object has been pulled apart from its original length. On the other hand, elongation specifically refers to the increase in length of a material when a tensile force is applied. This increase in length can be expressed as a percentage of the original length of the material. Understanding these two terms is crucial for engineers and scientists who work with materials, as they directly relate to the strength and durability of various substances.When a material is subjected to a force, it undergoes deformation. This deformation can be elastic or plastic. Elastic deformation occurs when the material returns to its original shape once the force is removed, while plastic deformation means that the material will not return to its original shape. The extension of a material during elastic deformation is temporary, whereas the elongation that occurs during plastic deformation is permanent. For instance, if you pull on a rubber band, it will stretch (or extend) but will return to its original size once you release it. However, if you stretch a piece of clay too much, it will remain longer than it was before, demonstrating elongation.In practical applications, understanding extension and elongation is vital in fields such as construction, manufacturing, and materials science. Engineers must know how much a material can extend under load without failing. This knowledge helps them select appropriate materials for specific applications, ensuring that structures and products can withstand the forces they will encounter during their use. For example, steel beams used in construction must have a certain level of elongation to absorb energy during events like earthquakes without breaking.Moreover, the concepts of extension and elongation are also significant in the field of biomechanics. In this area, researchers study how biological tissues respond to forces and loads. Muscles, tendons, and ligaments all experience extension and elongation when they are used during physical activities. Understanding how much these tissues can safely extend or elongate is crucial for developing rehabilitation programs and preventing injuries. For instance, a physical therapist might assess a patient's range of motion to determine how much a muscle can extend before it risks tearing.In conclusion, while the terms extension and elongation are often used interchangeably, they describe different aspects of material behavior under stress. Extension refers to the process of stretching, while elongation indicates the resulting change in length. A clear understanding of these concepts is essential for professionals across various fields, including engineering, construction, and healthcare. By grasping the differences between extension and elongation, we can better appreciate the complexities of material science and the importance of choosing the right materials for specific applications. Whether it’s in designing a bridge, creating a new product, or rehabilitating an injury, the knowledge of how materials behave under tension is invaluable.

在物理和工程的世界中，术语“extension”和“elongation”常常出现在关于材料及其特性的讨论中。这两个概念密切相关，但它们具有不同的含义，理解这些含义是非常重要的。术语extension通常指的是拉伸某物的行为或被拉伸的状态。它是衡量一个物体从其原始长度被拉开的程度。而另一方面，elongation特指当施加拉伸力时材料长度的增加。这种长度的增加可以表示为材料原始长度的百分比。理解这两个术语对于从事材料工作的工程师和科学家至关重要，因为它们直接关系到各种物质的强度和耐久性。当材料受到力的作用时，它会发生变形。这种变形可以是弹性或塑性的。弹性变形发生在材料在去除力后返回到其原始形状的时候，而塑性变形意味着材料不会返回到其原始形状。例如，如果你拉伸一个橡皮筋，它会被拉伸（或extend），但一旦你放开它，它会恢复到原来的大小。然而，如果你拉伸一块粘土太多，它将保持比之前更长，这表明了elongation。在实际应用中，理解extension和elongation在建筑、制造和材料科学等领域至关重要。工程师必须知道材料在负载下可以extend多少而不发生故障。这种知识帮助他们选择适合特定应用的材料，确保结构和产品能够承受在使用过程中遇到的力量。例如，用于建筑的钢梁必须具有一定程度的elongation，以便在地震等事件中吸收能量而不破裂。此外，extension和elongation的概念在生物力学领域也很重要。在这一领域，研究人员研究生物组织如何对力量和负载作出反应。肌肉、腱和韧带在进行身体活动时都会经历extension和elongation。了解这些组织可以安全地extend或elongate多少对于制定康复计划和预防伤害至关重要。例如，物理治疗师可能会评估患者的运动范围，以确定肌肉在风险撕裂前可以extend多少。总之，尽管术语extension和elongation常常可以互换使用，但它们描述的是材料在应力下行为的不同方面。Extension指的是拉伸的过程，而elongation则表示长度的变化。清楚理解这些概念对于各个领域的专业人士来说都是必不可少的，包括工程、建筑和医疗保健。通过掌握extension和elongation之间的区别，我们可以更好地欣赏材料科学的复杂性以及选择特定应用合适材料的重要性。无论是在设计桥梁、创造新产品还是康复伤害，了解材料在拉伸下的行为是无价的。