angle of external friction
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英语范文：
The angle of external friction refers to the angle between two surfaces when they are in relative motion with each other. It is a measure of the force resisting the sliding of one surface over another. In engineering and construction, it is an important factor to consider when designing and building structures that require stability, such as bridges, roads, and buildings.
The angle of external friction can vary depending on the materials involved, the surface conditions, and the environment in which the structures are located. It can also be affected by factors such as temperature, moisture content, and wear and tear over time. Therefore, it is crucial to carefully assess the angle of external friction during the design phase of a project to ensure safe and reliable structures.
In summary, the angle of external friction is an important factor to consider in engineering and construction projects. It affects the stability and long-term performance of structures and must be carefully monitored and maintained to ensure safe and reliable outcomes.
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音标和基础释义：
angle of external friction：外部摩擦角
基础释义：
外部摩擦角是指两个表面相对运动时的角度，是衡量一个表面在另一个表面上滑动时所受阻力大小的指标。在工程和建筑中，它是设计和建造需要稳定性的结构（如桥梁、道路和建筑物）时需要考虑的重要因素。
外部摩擦角会因材料、表面状况和结构所处的环境等因素而变化。它还会受到温度、含水量、磨损以及时间的影响。因此，在项目的设计阶段，仔细评估外部摩擦角至关重要，以确保安全和可靠的成果。
综上所述，外部摩擦角是工程和建筑项目中需要考虑的重要因素。它影响结构的稳定性和长期性能，必须仔细监测和维护，以确保安全和可靠的结果。
angle of external friction
摩擦角是材料力学中的一个重要概念。它描述的是材料在受到外部施加的压力或推力时，其内部摩擦力的表现。这个角度通常用θ表示，其大小取决于材料的性质和施力方式。
在土木工程中，我们经常需要使用到摩擦角的概念。例如，在分析桥梁或建筑物的稳定性时，我们需要考虑地基与土壤之间的摩擦力。如果土壤的摩擦角较小，那么地基可能会滑动，导致建筑物或桥梁的倾斜或倒塌。因此，了解土壤的摩擦角对于工程设计至关重要。
以下是一篇围绕angle of external friction的英语作文：
Title: 摩擦角：土木工程中的关键因素
在我们的日常生活中，我们经常忽视摩擦角的重要性。然而，在土木工程中，这个看似微小的角度却起着至关重要的作用。摩擦角描述的是材料在受到外部施加的压力或推力时，其内部产生的摩擦力的大小。
想象一下，如果我们正在建造一座桥梁，那么地基的稳定性至关重要。如果地基与土壤之间的摩擦角较小，那么土壤可能会在外部力量的作用下滑动，导致桥梁倾斜或倒塌。因此，了解土壤的摩擦角并据此设计桥梁的基础结构是至关重要的。
此外，摩擦角也影响我们选择建筑材料。不同的材料具有不同的摩擦角，因此选择具有高摩擦角的材料可以增加建筑物的稳定性。同样，这也适用于道路设计。如果我们选择的沥青或混凝土的摩擦角较低，那么车辆在行驶过程中可能会打滑，增加交通事故的风险。
总的来说，摩擦角是土木工程中一个看似微小，但却至关重要的概念。通过了解并正确使用这个概念，我们可以设计出更稳定、更安全的建筑物和基础设施。因此，我们应该更加重视这个看似微小的角度，因为它在我们的日常生活中起着重要的作用。
angle of external friction
The angle of external friction is an important factor in many mechanical systems. It refers to the force that acts between two surfaces, resisting relative motion. In a simple example, two pieces of wood nailed together may experience a change in angle of external friction, which could affect the stability of the assembly.
In engineering and physics, the angle of external friction is used to describe the strength of a material's resistance to sliding. It is a key component in understanding the behavior of materials under various conditions, such as when subjected to stress or load.
In some contexts, the angle of external friction can be increased through surface treatment or coating, which can improve the material's ability to resist sliding. This can be important in applications such as automotive engineering, where components such as wheels and brakes must function properly in various conditions.
Here's an example sentence showing the concept of angle of external friction in a real-world context: "The angle of external friction of the brake pads on my car's brakes has been increased through surface treatment, ensuring better control under heavy braking conditions."
Finally, here's a short essay on the topic of angle of external friction:
"Angle of External Friction: The Key to Stability and Performance"
In today's technologically advanced world, machines and systems rely on precise movements and interactions between components. The angle of external friction, a fundamental force between surfaces, plays a crucial role in ensuring these systems function as intended. Understanding this concept and how to manipulate it can lead to more stable and reliable mechanical designs. From automobile brakes to construction equipment, optimizing the angle of external friction can have a significant impact on performance and durability.
