point contact

简明释义

点接触

英英释义

例句

1.In this experiment, we will measure the resistance at the point contact 点接触 between the two metals.

在这个实验中，我们将测量两种金属之间的点接触 point contact的电阻。

2.The electrical circuit requires a reliable point contact 点接触 to function properly.

电路需要一个可靠的点接触 point contact才能正常工作。

3.The design includes a point contact 点接触 feature that enhances performance under pressure.

该设计包括一个点接触 point contact特性，能够在压力下提升性能。

4.A point contact 点接触 joint is essential for maintaining stability in this structure.

在这个结构中，点接触 point contact连接对保持稳定性至关重要。

5.The microphone uses a point contact 点接触 system to capture sound more accurately.

麦克风使用点接触 point contact系统来更准确地捕捉声音。

作文

In the world of physics and engineering, the term point contact refers to a situation where two surfaces touch at a single, infinitesimal point. This concept is crucial in various applications, from the design of electrical components to the analysis of mechanical systems. Understanding point contact can provide insights into how forces are transmitted through materials and how wear and tear can be minimized in mechanical systems.To illustrate this, consider the example of a pencil resting on a table. The weight of the pencil exerts a force on the table, but it does so at a very small area where the pencil touches the surface. This is an example of point contact, as the entire weight of the pencil is concentrated at that tiny point. In engineering, this principle is vital when designing bearings, gears, and other components that require precise movements. When two parts experience point contact, the pressure at that contact point can be extremely high, leading to potential failure if not properly managed.Moreover, point contact plays a significant role in electrical conductivity. For instance, in electronic devices, when two conductive materials make contact at a point, they create a pathway for electricity to flow. This is particularly important in circuit design, where ensuring a reliable point contact can mean the difference between a functioning device and one that fails to operate. Engineers must consider the materials used, the surface roughness, and the environmental conditions that could affect the quality of the point contact.The significance of point contact is also evident in tribology, the study of friction, wear, and lubrication. When two surfaces slide against each other, the nature of their point contact can determine how much friction is generated. By optimizing the point contact through lubrication or surface treatments, engineers can enhance the performance and longevity of mechanical systems. For instance, in automotive applications, reducing the friction at the point contact between brake pads and rotors can lead to improved braking efficiency and reduced wear.In summary, the concept of point contact is fundamental across various fields, including physics, engineering, and materials science. It serves as a reminder of how even the smallest interactions can have significant consequences. Whether it's ensuring efficient electrical connections, improving mechanical performance, or minimizing wear, understanding point contact is essential for innovation and advancement in technology. As we continue to explore and manipulate materials at the microscopic level, the importance of point contact will only grow, emphasizing the intricate relationships between forces, materials, and design. In conclusion, when we think about the applications and implications of point contact, we see a clear intersection of theory and practice. Engineers and scientists must remain vigilant in their understanding of these concepts to develop more efficient and reliable systems. The study of point contact not only enhances our technical capabilities but also deepens our appreciation for the complexities of the physical world around us.

在物理和工程的世界中，术语点接触指的是两个表面在一个微小的点上相接触的情况。这个概念在各种应用中至关重要，从电气元件的设计到机械系统的分析。理解点接触可以提供对材料如何传递力以及如何在机械系统中最小化磨损的见解。为了说明这一点，考虑一下铅笔放在桌子上的例子。铅笔的重量施加在桌子上，但它是在铅笔与表面接触的非常小的区域施加的。这就是点接触的一个例子，因为铅笔的整个重量集中在那个微小的点上。在工程中，当设计轴承、齿轮和其他需要精确运动的组件时，这一原理至关重要。当两个部件经历点接触时，接触点的压力可能会极高，如果管理不当，会导致潜在的故障。此外，点接触在电导率中也发挥着重要作用。例如，在电子设备中，当两种导电材料在一个点上接触时，就会形成电流流动的通道。这在电路设计中尤为重要，因为确保可靠的点接触可能意味着设备能否正常工作之间的差异。工程师必须考虑所使用的材料、表面粗糙度以及可能影响点接触质量的环境条件。点接触的重要性在摩擦学中也显而易见，这是研究摩擦、磨损和润滑的学科。当两个表面相互滑动时，它们的点接触性质可以决定产生多少摩擦。通过优化点接触，例如通过润滑或表面处理，工程师可以提高机械系统的性能和寿命。例如，在汽车应用中，减少刹车片与转子的点接触处的摩擦可以提高刹车效率并减少磨损。总之，点接触的概念在物理、工程和材料科学等多个领域中都是基础性的。它提醒我们，即使是最小的相互作用也可能产生重大影响。无论是确保高效的电连接、改善机械性能，还是最小化磨损，理解点接触对于技术的创新和进步至关重要。随着我们继续探索和操控微观层面的材料，点接触的重要性只会增加，强调力、材料和设计之间复杂的关系。最后，当我们思考点接触的应用和影响时，我们看到了理论与实践之间的明确交集。工程师和科学家必须在理解这些概念方面保持警惕，以开发更高效和可靠的系统。对点接触的研究不仅增强了我们的技术能力，还加深了我们对周围物理世界复杂性的欣赏。