change in length

简明释义

长度变化

英英释义

例句

1.When heated, metals typically experience a change in length due to thermal expansion.

加热时，金属通常会因热膨胀而经历长度变化。

2.The engineer noted a significant change in length of the cable during the load test.

工程师注意到在负载测试中电缆有显著的长度变化。

3.The fabric will undergo a change in length when it is washed, which means it may shrink.

这块布料在洗涤时会经历长度变化，这意味着它可能会缩水。

4.The change in length of the spring can be calculated using Hooke's Law.

弹簧的长度变化可以使用胡克定律计算。

5.A change in length of the bridge was observed after the earthquake.

地震后观察到桥梁的长度变化。

作文

Understanding the concept of a change in length is essential in various fields, including physics, engineering, and even everyday life. A change in length refers to the difference in the measurement of an object before and after a certain condition is applied. This could be due to factors such as temperature, pressure, or physical force. For instance, when a metal rod is heated, it expands, resulting in a measurable change in length. Similarly, when a rubber band is stretched, it also experiences a change in length as it elongates under tension.In the realm of physics, the change in length of materials can be explained through the principles of thermal expansion and elasticity. Thermal expansion occurs when materials are heated; the increase in temperature causes the particles within the material to move more vigorously, leading to an increase in size. This phenomenon is crucial in engineering applications, where precise measurements are necessary to ensure the integrity and functionality of structures. For example, bridges are designed with expansion joints that accommodate the change in length that occurs during temperature fluctuations.Moreover, understanding change in length is vital in the field of mechanics, particularly when analyzing forces acting on objects. When a force is applied to an object, its length can change. This is described by Hooke's Law, which states that the extension of a spring is directly proportional to the load applied to it, provided the elastic limit is not exceeded. Thus, engineers must consider the change in length when designing systems that involve springs or other elastic materials.In everyday life, we encounter change in length in various ways. For instance, when using a measuring tape, the change in length of an object can help us determine if it fits in a particular space or if it meets specific requirements. Additionally, in the world of textiles, the change in length of fabric when washed or dried can affect the final product, making it crucial for manufacturers to account for this variation during production.Furthermore, the change in length can have implications in the biological sciences as well. For example, when muscles contract, there is a change in length that allows for movement. Understanding how muscles shorten and lengthen is fundamental for fields such as kinesiology and physical therapy, where professionals work to improve mobility and strength in patients.In conclusion, the concept of change in length is a multifaceted topic that spans numerous disciplines. Whether in science, engineering, or daily activities, recognizing the factors that contribute to a change in length enhances our understanding of the world around us. By studying this principle, we can better design structures, create effective tools, and improve our overall quality of life. As we continue to explore the implications of change in length, we gain valuable insights that can lead to advancements in technology and improvements in various fields.

理解长度变化的概念在物理学、工程学甚至日常生活中都是至关重要的。长度变化是指在施加某种条件之前和之后物体测量值之间的差异。这可能是由于温度、压力或物理力等因素造成的。例如，当金属棒被加热时，它会膨胀，从而导致可测量的长度变化。同样，当橡皮筋被拉伸时，它也会在张力下延长，经历长度变化。在物理学领域，材料的长度变化可以通过热膨胀和弹性原理来解释。热膨胀发生在材料被加热时；温度的升高导致材料内部的粒子运动更为剧烈，从而导致尺寸的增加。这一现象在工程应用中至关重要，因为精确的测量对于确保结构的完整性和功能性是必要的。例如，桥梁的设计考虑了在温度波动过程中发生的长度变化，因此设置了膨胀缝。此外，理解长度变化在机械学领域也至关重要，特别是在分析作用于物体的力时。当对物体施加力时，其长度可能会发生变化。这可以通过胡克定律来描述，该定律指出，在未超过弹性极限的情况下，弹簧的伸长与施加的负载成正比。因此，工程师在设计涉及弹簧或其他弹性材料的系统时，必须考虑长度变化。在日常生活中，我们以各种方式遇到长度变化。例如，当使用卷尺时，物体的长度变化可以帮助我们确定它是否适合特定空间或是否符合特定要求。此外，在纺织品行业，布料在洗涤或干燥时的长度变化可能会影响最终产品，因此制造商在生产过程中必须考虑这种变化。此外，长度变化在生物科学中也可能产生影响。例如，当肌肉收缩时，会发生长度变化，从而实现运动。理解肌肉如何缩短和延长对于运动学和物理治疗等领域至关重要，这些专业人员致力于改善患者的活动能力和力量。总之，长度变化的概念是一个多面向的话题，涵盖多个学科。无论是在科学、工程还是日常活动中，认识到导致长度变化的因素增强了我们对周围世界的理解。通过研究这一原理，我们可以更好地设计结构、创造有效的工具并改善我们的整体生活质量。随着我们继续探索长度变化的影响，我们获得了有价值的见解，这将推动技术进步和各个领域的改进。