projected area

简明释义

计算工作面积

英英释义

例句

1.When designing the wind turbine, engineers must consider the projected area 投影面积 of the blades.

在设计风力涡轮机时，工程师必须考虑叶片的投影面积。

2.To determine the solar panel efficiency, we need to know the projected area 投影面积 that receives sunlight.

为了确定太阳能电池板的效率，我们需要知道接收阳光的投影面积。

3.The projected area 投影面积 of a satellite affects its orbital decay due to atmospheric drag.

卫星的投影面积会影响其因大气阻力而导致的轨道衰减。

4.The wind load on the building is calculated using the projected area 投影面积 of its facade.

建筑物的风荷载是通过其外立面的投影面积来计算的。

5.In aerodynamics, the drag force is proportional to the projected area 投影面积 of the object in the flow.

在空气动力学中，阻力与物体在流动中的投影面积成正比。

作文

Understanding the concept of projected area is essential in various fields such as physics, engineering, and architecture. The term refers to the area of a surface as it appears when projected onto a plane, typically perpendicular to the direction of interest. This concept plays a crucial role in determining how forces act on objects in different orientations and can significantly influence the design and functionality of structures.For instance, consider a simple example of a flat rectangular surface. When this surface is positioned parallel to the ground, its projected area is equal to its actual area. However, if the same surface is tilted at an angle, the projected area changes. The tilt reduces the effective area that is exposed to forces such as wind or water flow, which can impact the structural integrity of buildings and other constructions.In the context of fluid dynamics, the projected area is vital for calculating drag forces acting on an object moving through a fluid. For example, a car driving down the highway has a certain projected area that determines how much air resistance it encounters. Engineers must account for this when designing vehicles to ensure they are aerodynamic and fuel-efficient. A smaller projected area translates to less drag, allowing for smoother movement through the air.Similarly, in the field of solar energy, the projected area of solar panels is a critical factor in maximizing energy capture. By orienting the panels to face the sun directly, one can increase their projected area relative to the sun’s rays, thereby enhancing their efficiency. Understanding how to manipulate the projected area can lead to significant improvements in energy production.Moreover, in architectural design, the projected area influences not only the aesthetics but also the environmental performance of buildings. Architects often use simulations to visualize how shadows cast by a building will affect surrounding areas. The projected area of balconies, overhangs, and other protruding elements can create shaded zones that help reduce heat gain in adjacent spaces, contributing to energy savings.In conclusion, the concept of projected area is more than just a mathematical term; it has real-world implications across various disciplines. Whether in engineering, architecture, or renewable energy, understanding how to calculate and optimize the projected area can lead to better designs and more efficient systems. As we continue to innovate and face challenges such as climate change and resource management, leveraging the principles associated with the projected area will be essential for creating sustainable solutions that benefit both society and the environment.

理解投影面积的概念在物理学、工程学和建筑学等多个领域中至关重要。这个术语指的是一个表面在投影到一个平面（通常垂直于感兴趣的方向）时所呈现的面积。这个概念在确定物体在不同方向上受力的方式中起着关键作用，并且可以显著影响结构的设计和功能。例如，考虑一个简单的平面矩形表面的例子。当这个表面与地面平行时，它的投影面积等于它的实际面积。然而，如果同样的表面倾斜一个角度，投影面积就会发生变化。倾斜会减少暴露于风或水流等力量的有效面积，这可能会影响建筑物和其他结构的结构完整性。在流体动力学的背景下，投影面积对于计算在流体中运动的物体所受的阻力至关重要。例如，一辆在高速公路上行驶的汽车具有一定的投影面积，决定了它所遇到的空气阻力。工程师必须考虑这一点，在设计车辆时确保它们具有空气动力学特性和燃油效率。较小的投影面积意味着较少的阻力，从而使空气中的运动更加顺畅。同样，在太阳能领域，太阳能电池板的投影面积是最大化能量捕获的关键因素。通过将电池板朝向太阳直接定位，可以增加其相对于太阳光线的投影面积，从而提高其效率。理解如何操控投影面积可以显著改善能源生产。此外，在建筑设计中，投影面积不仅影响美学，还影响建筑的环境表现。建筑师经常使用模拟来可视化建筑物投射的阴影将如何影响周围区域。阳台、悬挑和其他突出元素的投影面积可以创造出阴影区域，帮助减少相邻空间的热增益，从而有助于节能。总之，投影面积的概念不仅仅是一个数学术语；它在各个学科中都具有现实世界的影响。无论是在工程、建筑还是可再生能源领域，理解如何计算和优化投影面积都可以带来更好的设计和更高效的系统。随着我们不断创新并面临气候变化和资源管理等挑战，利用与投影面积相关的原则将对创造有利于社会和环境的可持续解决方案至关重要。