limiting velocity

简明释义

极限速度

英英释义

例句

1.In fluid dynamics, the limiting velocity 极限速度 is crucial for predicting flow patterns.

在流体动力学中，limiting velocity 极限速度 对预测流动模式至关重要。

2.The car's performance was hampered by its limiting velocity 极限速度 on the racetrack.

这辆车在赛道上的表现受到其limiting velocity 极限速度的限制。

3.Engineers must calculate the limiting velocity 极限速度 to ensure safety in high-speed trains.

工程师必须计算limiting velocity 极限速度以确保高速列车的安全。

4.The limiting velocity 极限速度 of the aircraft was tested during the flight simulation.

飞机的limiting velocity 极限速度在飞行模拟中进行了测试。

5.The rocket reached its limiting velocity 极限速度 during the final stage of its ascent.

火箭在上升的最后阶段达到了它的limiting velocity 极限速度。

作文

In the realm of physics and engineering, the concept of limiting velocity plays a crucial role in understanding the behavior of objects in motion. The term limiting velocity refers to the maximum speed that an object can achieve under specific conditions, beyond which it cannot accelerate further. This phenomenon is particularly evident in various scenarios, such as free-fall motion, fluid dynamics, and even in the context of vehicles moving through air or water.To illustrate the concept of limiting velocity, let us consider the case of a skydiver. When a skydiver jumps from an airplane, they initially accelerate due to the force of gravity. However, as they fall, they encounter air resistance, which acts in the opposite direction to their motion. As their speed increases, the air resistance also increases until it equals the gravitational force acting on the skydiver. At this point, the forces are balanced, and the skydiver stops accelerating, reaching a constant speed known as the limiting velocity. This speed is influenced by factors such as the diver's mass, body position, and the density of the air.Another example can be found in the study of fluids. When an object moves through a fluid, such as a fish swimming in water, it experiences drag forces that oppose its motion. The limiting velocity in this context is the maximum speed the fish can achieve while swimming, which depends on its size, shape, and the viscosity of the water. Understanding the limiting velocity of aquatic animals can help researchers design more efficient underwater vehicles and improve our knowledge of marine biology.In engineering applications, the concept of limiting velocity is vital for designing vehicles, aircraft, and other moving systems. Engineers must account for the limiting velocity when calculating the performance and safety of these systems. For instance, in the design of an aircraft, the limiting velocity is critical for determining the stall speed, which is the speed below which an aircraft cannot maintain level flight. Knowing this speed helps pilots understand the safe operating limits of their aircraft and avoid dangerous situations.Moreover, the limiting velocity is also relevant in the field of sports science. Athletes often push their bodies to the limit, striving to achieve faster speeds and improved performance. However, each athlete has a unique limiting velocity determined by their physical capabilities, training, and technique. Coaches and trainers analyze these limits to develop tailored training programs that help athletes optimize their performance without risking injury.In conclusion, the concept of limiting velocity is essential across various fields, from physics to engineering and sports science. It represents the maximum speed that an object can attain under given conditions, influenced by factors such as resistance, mass, and design. By understanding and applying the principles of limiting velocity, we can enhance our knowledge of motion, improve technology, and support athletic performance. As we continue to explore the intricacies of motion, the significance of limiting velocity will undoubtedly remain a fundamental aspect of our understanding of the physical world.

在物理学和工程学领域，极限速度的概念在理解运动物体的行为中发挥着至关重要的作用。术语极限速度指的是在特定条件下物体可以达到的最大速度，超过这个速度后，它无法进一步加速。这种现象在自由下落运动、流体动力学，甚至在车辆穿过空气或水的情况下都特别明显。为了说明极限速度的概念，让我们考虑一个跳伞者的案例。当跳伞者从飞机上跳下时，他们最初因重力的作用而加速。然而，随着他们的下落，他们会遇到空气阻力，这种阻力与他们的运动方向相反。随着速度的增加，空气阻力也会增加，直到它等于作用在跳伞者身上的重力。在这一点上，力量达到了平衡，跳伞者停止加速，达到了一个称为极限速度的恒定速度。这个速度受跳伞者的质量、身体姿势和空气密度等因素的影响。另一个例子可以在流体研究中找到。当一个物体在流体中移动时，比如鱼在水中游泳，它会经历与运动相反的阻力。此时的极限速度是鱼在游泳时能够达到的最大速度，这取决于它的大小、形状和水的粘度。理解水生动物的极限速度可以帮助研究人员设计更高效的水下交通工具，并提高我们对海洋生物学的认识。在工程应用中，极限速度的概念对于设计车辆、飞机和其他运动系统至关重要。工程师必须在计算这些系统的性能和安全性时考虑极限速度。例如，在飞机设计中，极限速度对于确定失速速度至关重要，失速速度是指飞机无法保持水平飞行的速度。了解这个速度有助于飞行员理解其飞机的安全操作限制，从而避免危险情况。此外，极限速度在体育科学领域也很相关。运动员们常常将自己的身体推向极限，努力实现更快的速度和更好的表现。然而，每个运动员都有一个独特的极限速度，这是由他们的身体能力、训练和技术决定的。教练和训练师分析这些极限，以制定量身定制的训练计划，帮助运动员优化表现而不冒受伤风险。总之，极限速度的概念在物理学、工程学和体育科学等各个领域都是至关重要的。它代表了物体在给定条件下可以达到的最大速度，受到阻力、质量和设计等因素的影响。通过理解和应用极限速度的原理，我们可以增强对运动的理解，改善技术，并支持运动表现。随着我们继续探索运动的复杂性，极限速度的重要性无疑将始终是我们理解物理世界的基本方面。