“air-resistance”在英文中通常指的是空气阻力，这是一种物理现象，通常发生在物体在空气中运动时。
关于“air-resistance”的英文范文可能涉及各种主题，例如空气阻力的原理、其对飞行器性能的影响、如何优化设计以减少阻力等等。以下是一个可能的示例：
Air Resistance: The Mystery and the Solution
Air resistance is a common phenomenon we all encounter in our daily lives. Whether it's a ball rolling down a hill or a car driving on a road, we can see the influence of air resistance every day. Although it may seem like a minor nuisance, air resistance can have a significant impact on the performance of various aerial vehicles, including aircraft and rockets. In this article, we will explore the mystery of air resistance and its solutions.
Air resistance can be explained by Newton's third law of motion. When an object moves through a fluid, such as air, it exerts a force on the fluid, causing it to move in the opposite direction of the object. This force, known as drag, is proportional to the velocity of the object and the viscosity of the fluid. Therefore, faster objects moving through air experience greater air resistance.
Aerodynamic design is crucial in reducing air resistance for aerial vehicles. By shaping the vehicle's surface in a way that minimizes the turbulence created by the airflow, designers can reduce drag and improve flight performance. For example, smooth, rounded surfaces and aerodynamic shapes are commonly used in aircraft design to minimize air resistance.
However, even with advanced aerodynamic design, air resistance cannot be completely eliminated. There are still limitations to how much drag can be reduced. Therefore, other technologies such as propulsion systems that generate less drag, like turbofans or ramjets, are being explored to further improve flight performance.
In conclusion, air resistance is a fundamental force that affects the performance of aerial vehicles. Understanding its principles and applying appropriate design strategies can significantly reduce drag and improve flight efficiency. As we continue to develop more advanced aerial vehicles, air resistance will continue to be a key consideration in their design and operation.
air-resistance的意思是“空气阻力”。
在英文范文如“The aircraft encountered air-resistance during its flight”中，air-resistance指的是飞机在飞行过程中遇到的空气阻力。
“air-resistance”在英文中可能指的是空气阻力，即空气对物体运动产生的阻碍力。
然而，我需要更多的上下文信息才能给出更准确的解释。 “air-resistance”在英文范文中的最新变化可能会根据具体的语境和用途而有所不同。