projected area

简明释义

投射面积

英英释义

例句

1.When designing vehicles, the projected area is crucial for reducing air resistance.

在设计车辆时，投影面积对于减少空气阻力至关重要。

2.The projected area of the solar panels determines how much sunlight they can capture.

太阳能板的投影面积决定了它们可以捕获多少阳光。

3.Engineers calculate the projected area of wind turbines to optimize their efficiency.

工程师计算风力涡轮机的投影面积以优化其效率。

4.In fluid dynamics, the projected area of an object affects the drag force it experiences.

在流体动力学中，物体的投影面积会影响它所经历的阻力。

5.The projected area of a building can influence its energy consumption for heating and cooling.

建筑物的投影面积可以影响其供暖和制冷的能耗。

作文

In the study of physics and engineering, the concept of projected area is crucial for understanding how objects interact with forces such as wind or water. The projected area refers to the area of an object as seen from a particular direction, essentially projecting the object's outline onto a plane perpendicular to that direction. This idea is particularly important in fields like aerodynamics, where the shape of an object can significantly impact its performance. For instance, when considering the flight of an airplane, the projected area of its wings plays a vital role in determining the lift generated during flight. A larger projected area generally means more lift, which can affect the aircraft's ability to ascend and maneuver effectively.Understanding the projected area also has applications beyond aviation. In civil engineering, architects must consider the projected area of buildings when designing structures that need to withstand wind forces. A tall and narrow building may have a smaller projected area against the wind compared to a wide, flat structure, influencing the design choices made to ensure safety and stability.Moreover, the projected area is not limited to solid objects. It can also apply to fluid dynamics, where the projected area of obstacles in a flow can determine drag forces acting on them. For example, the projected area of a bridge's support pillars in a river affects how water flows around them, impacting both the stability of the structure and the ecology of the surrounding environment.The calculation of projected area can be straightforward for simple shapes, such as rectangles or circles, but it becomes more complex for irregular forms. Engineers often use computational methods and simulations to accurately determine the projected area of complex objects. By understanding the projected area, they can optimize designs to reduce drag and improve efficiency, which is essential in many industries, including automotive and aerospace.In summary, the concept of projected area is fundamental in various scientific and engineering disciplines. It helps predict how objects will behave in different environments and under various forces. Whether designing airplanes, buildings, or other structures, considering the projected area allows engineers and architects to create safer and more efficient designs. As technology advances, the tools used to calculate and analyze projected area will continue to evolve, leading to even more innovative solutions in the future.

在物理和工程学的研究中，投影面积的概念对于理解物体如何与风或水等力相互作用至关重要。投影面积是指从特定方向看物体时的面积，基本上是将物体的轮廓投射到与该方向垂直的平面上。这个概念在空气动力学等领域特别重要，因为物体的形状可以显著影响其性能。例如，在考虑飞机的飞行时，机翼的投影面积在决定飞行过程中产生的升力方面起着至关重要的作用。较大的投影面积通常意味着更多的升力，这会影响飞机的升空和有效机动能力。理解投影面积的应用不仅限于航空。在土木工程中，建筑师在设计需要承受风力的结构时必须考虑投影面积。一栋高而窄的建筑在风中的投影面积可能小于一栋宽而平坦的建筑，这影响了确保安全和稳定所做的设计选择。此外，投影面积不仅限于固体物体。它也可以应用于流体动力学，其中流动中障碍物的投影面积可以决定作用在它们上的阻力。例如，桥梁支柱在河流中的投影面积影响水流过它们的方式，从而影响结构的稳定性和周围环境的生态。对于简单形状，如矩形或圆形，投影面积的计算可能很简单，但对于不规则形状则变得更加复杂。工程师通常使用计算方法和模拟来准确确定复杂物体的投影面积。通过理解投影面积，他们可以优化设计以减少阻力，提高效率，这在许多行业（包括汽车和航空航天）中至关重要。总之，投影面积的概念在各种科学和工程学科中都是基础。它有助于预测物体在不同环境和各种力下的行为。无论是设计飞机、建筑物还是其他结构，考虑投影面积使工程师和建筑师能够创建更安全、更高效的设计。随着技术的进步，用于计算和分析投影面积的工具将继续发展，从而在未来带来更创新的解决方案。