air resistance

简明释义

1. 空气阻力; 2. 空气阻抗; 3. 不透气度;

英英释义

例句

1.When designing rockets, engineers must account for air resistance at different altitudes.

在设计火箭时，工程师必须考虑不同高度的空气阻力。

2.The air resistance experienced by a falling object affects its terminal velocity.

下落物体所经历的空气阻力会影响其终极速度。

3.Aerofoils are used in airplanes to reduce air resistance during flight.

飞机使用气动翼来减少飞行中的空气阻力。

4.Cyclists wear tight-fitting clothing to decrease air resistance while racing.

骑自行车的人穿着紧身衣以减少比赛时的空气阻力。

5.The design of the new sports car minimizes air resistance to improve speed.

新款跑车的设计减少了空气阻力，以提高速度。

作文

Air resistance, also known as drag, is a crucial concept in physics that affects the motion of objects moving through the atmosphere. When an object travels through the air, it encounters a force opposing its motion, which is referred to as air resistance (空气阻力). This force is dependent on several factors, including the shape of the object, its speed, and the density of the air. Understanding air resistance (空气阻力) is essential for various applications, such as aerodynamics, engineering, and even sports science.For example, consider a skydiver jumping from an airplane. Initially, the skydiver accelerates downward due to gravity. However, as their speed increases, the air resistance (空气阻力) acting against them also increases. Eventually, the skydiver reaches a point where the force of air resistance (空气阻力) equals the gravitational force pulling them down. At this stage, they stop accelerating and fall at a constant speed known as terminal velocity. This phenomenon illustrates how air resistance (空气阻力) plays a vital role in determining the motion of falling objects.In the field of engineering, understanding air resistance (空气阻力) is critical when designing vehicles, aircraft, and even buildings. For instance, cars are designed with aerodynamic shapes to minimize air resistance (空气阻力) and improve fuel efficiency. The smoother the surface of the vehicle and the more streamlined its design, the less air resistance (空气阻力) it will encounter, allowing it to move faster and consume less energy.Moreover, in sports, athletes often utilize knowledge of air resistance (空气阻力) to enhance their performance. Cyclists, for example, wear tight-fitting clothing and adopt aerodynamic postures to reduce air resistance (空气阻力) while racing. Swimmers also aim to minimize air resistance (空气阻力) by refining their strokes and body positions in the water, which can significantly impact their speed and efficiency.In addition to practical applications, air resistance (空气阻力) is also a fascinating subject in scientific research. Scientists study how different shapes and materials interact with air to better understand the principles of motion and force. Experiments involving wind tunnels help researchers visualize the effects of air resistance (空气阻力) on various objects, leading to advancements in technology and design.Furthermore, air resistance (空气阻力) has implications beyond Earth. In space exploration, understanding how objects behave when re-entering the Earth's atmosphere is essential for ensuring the safety of spacecraft. The intense air resistance (空气阻力) experienced during re-entry can generate extreme temperatures, and engineers must account for this when designing heat shields and protective materials.In conclusion, air resistance (空气阻力) is a fundamental force that influences the movement of objects through the air. Its effects are seen in everyday life, from the way we design vehicles and athletic gear to the principles of physics governing skydiving and space exploration. A comprehensive understanding of air resistance (空气阻力) not only enhances our grasp of physical concepts but also drives innovation across various fields. By studying and applying the principles of air resistance (空气阻力), we can continue to improve technology and enhance our understanding of the natural world.

空气阻力，也称为阻力，是物理学中的一个关键概念，它影响着在大气中运动的物体的运动。当一个物体穿过空气时，它会遇到一种与其运动相对的力量，这被称为空气阻力（空气阻力）。这种力量依赖于多个因素，包括物体的形状、速度和空气的密度。理解空气阻力（空气阻力）对于各种应用至关重要，例如空气动力学、工程学，甚至体育科学。例如，考虑一个从飞机上跳下来的跳伞者。起初，跳伞者因重力向下加速。然而，随着他们速度的增加，作用在他们身上的空气阻力（空气阻力）也随之增加。最终，跳伞者达到一个点，此时空气阻力（空气阻力）的力量等于将他们向下拉的重力。在这个阶段，他们停止加速，以恒定的速度下落，这个速度被称为终端速度。这个现象说明了空气阻力（空气阻力）在决定自由落体物体运动中的重要作用。在工程领域，理解空气阻力（空气阻力）在设计车辆、飞机甚至建筑物时至关重要。例如，汽车的设计采用空气动力学形状以最小化空气阻力（空气阻力）并提高燃油效率。车辆的表面越光滑，设计越流线型，所遭遇的空气阻力（空气阻力）就越少，从而使其移动得更快，消耗更少的能量。此外，在体育运动中，运动员通常利用对空气阻力（空气阻力）的知识来提升他们的表现。例如，骑自行车的人在比赛中穿着紧身衣物并采取空气动力学姿势，以减少空气阻力（空气阻力）。游泳者也通过改进划水动作和身体姿势来尽量降低空气阻力（空气阻力），这可以显著影响他们的速度和效率。除了实际应用外，空气阻力（空气阻力）也是科学研究中的一个迷人课题。科学家们研究不同形状和材料如何与空气相互作用，以更好地理解运动和力的原理。涉及风洞的实验帮助研究人员可视化各种物体上空气阻力（空气阻力）的影响，从而推动技术和设计的进步。此外，空气阻力（空气阻力）在地球之外也有影响。在太空探索中，理解物体在重新进入地球大气层时的行为对于确保航天器的安全至关重要。在再入过程中经历的强烈空气阻力（空气阻力）可能会产生极端温度，因此工程师必须在设计隔热罩和保护材料时考虑这一点。总之，空气阻力（空气阻力）是影响物体在空气中运动的基本力量。它的作用在日常生活中随处可见，从我们设计车辆和运动装备的方式到控制跳伞和太空探索的物理原理。全面理解空气阻力（空气阻力）不仅增强了我们对物理概念的掌握，还推动了各个领域的创新。通过研究和应用空气阻力（空气阻力）的原理，我们可以继续改善技术，增进对自然世界的理解。