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 of a particle depends on its size and shape.

在流体动力学中，颗粒的limiting velocity 极限速度取决于其大小和形状。

2.The limiting velocity 极限速度 for this type of aircraft is significantly higher than for others.

这种类型飞机的limiting velocity 极限速度明显高于其他飞机。

3.The rocket reached its limiting velocity 极限速度 after several seconds of propulsion.

火箭在几秒钟的推进后达到了它的limiting velocity 极限速度。

4.As the object fell, it quickly approached its limiting velocity 极限速度 due to air resistance.

当物体下落时，由于空气阻力，它迅速接近它的limiting velocity 极限速度。

5.Engineers must calculate the limiting velocity 极限速度 to ensure the safety of the vehicle.

工程师必须计算limiting velocity 极限速度以确保车辆的安全。

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 refers to the maximum velocity that an object can achieve under specific conditions, beyond which it cannot accelerate further. This phenomenon is particularly significant in various fields, including aerodynamics, fluid dynamics, and even in the study of celestial bodies. Understanding limiting velocity allows scientists and engineers to predict how objects will behave when subjected to forces such as gravity, drag, and thrust.For instance, consider a skydiver falling through the atmosphere. As the skydiver accelerates due to gravity, air resistance begins to act against the motion. Initially, the skydiver speeds up, but as the velocity increases, the force of air resistance also increases until it equals the gravitational force acting on the skydiver. At this point, the net force becomes zero, and the skydiver stops accelerating, reaching a constant speed known as limiting velocity or terminal velocity. This concept is vital for understanding safe parachuting practices, as knowing the limiting velocity helps ensure that parachutes are designed to open at appropriate altitudes to slow descent safely.The idea of limiting velocity is not limited to skydiving; it applies to various scenarios involving fluids. For example, in the case of a boat moving through water, there is a point at which the resistance from the water equals the thrust produced by the boat's engine. Once this balance is achieved, the boat reaches its limiting velocity. Engineers must consider this when designing vessels to ensure they operate efficiently and safely within their intended speed ranges.Moreover, in astrophysics, limiting velocity can refer to the maximum speed that a star or planet can attain due to gravitational forces and other cosmic influences. Understanding these limits is essential for predicting the movement of celestial bodies and the dynamics of galaxies. For instance, when studying the orbits of planets, astronomers take into account the limiting velocity to calculate the stability of their paths and the potential for collision with other objects in space.In conclusion, the concept of limiting velocity is fundamental across multiple disciplines. It provides insight into the forces at play when objects move and helps professionals design safer and more efficient systems. By grasping the implications of limiting velocity, we can better understand the physical world and apply this knowledge to real-world challenges, whether it be in the sky, on water, or in the vastness of space. As we continue to explore and innovate, the principles surrounding limiting velocity will undoubtedly remain integral to our advancements in science and technology.

在物理和工程领域，限制速度的概念在理解运动物体的行为方面起着至关重要的作用。这个术语指的是在特定条件下，物体能够达到的最大速度，超过这个速度后，它将无法进一步加速。这种现象在多个领域中尤为重要，包括空气动力学、流体动力学，甚至在天体研究中。理解限制速度使科学家和工程师能够预测物体在重力、阻力和推力等力的作用下的行为。例如，考虑一个通过大气层自由落体的跳伞者。当跳伞者因重力加速下落时，空气阻力开始对其运动产生影响。最初，跳伞者的速度不断增加，但随着速度的增加，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，合力变为零，跳伞者停止加速，达到了一个称为限制速度或终端速度的恒定速度。这个概念对于理解安全跳伞实践至关重要，因为了解限制速度有助于确保降落伞在适当的高度打开，从而安全减缓下降速度。限制速度的概念并不限于跳伞；它适用于涉及流体的各种场景。例如，在船只通过水面移动的情况下，存在一个点，此时水的阻力等于船发动机产生的推力。一旦这种平衡达成，船就达到了其限制速度。工程师在设计船只时必须考虑这一点，以确保它们在预定速度范围内高效且安全地运行。此外，在天体物理学中，限制速度可以指由于引力和其他宇宙影响，星星或行星可以达到的最大速度。理解这些限制对于预测天体的运动以及星系的动态至关重要。例如，在研究行星轨道时，天文学家考虑限制速度来计算它们路径的稳定性以及与太空中其他物体碰撞的潜力。总之，限制速度的概念在多个学科中都是基础。它提供了对物体运动时所涉及的力的洞察，并帮助专业人士设计更安全、更高效的系统。通过掌握限制速度的含义，我们可以更好地理解物理世界，并将这一知识应用于现实世界的挑战，无论是在天空中、水面上，还是在浩瀚的太空中。随着我们不断探索和创新，围绕限制速度的原则无疑将继续在科学和技术的进步中发挥重要作用。