local drag

简明释义

局部阻力

英英释义

例句

1.During the flight test, the pilot noted that local drag increased near the mountains.

在飞行测试中，飞行员注意到在山附近局部阻力增加。

2.The race car was affected by the local drag from the surrounding buildings, slowing it down.

赛车受到了周围建筑物的局部阻力影响，速度减慢。

3.In urban areas, cyclists often experience local drag due to the wind patterns created by tall structures.

在城市地区，骑自行车的人经常会因高楼产生的风模式而遭遇局部阻力。

4.The architect had to account for local drag when positioning the new building to ensure airflow.

建筑师在定位新建筑时必须考虑局部阻力以确保气流通畅。

5.Engineers must consider the local drag when designing wind turbines to maximize efficiency.

工程师在设计风力涡轮机时必须考虑局部阻力以最大化效率。

作文

In the world of physics, the concept of drag is commonly associated with the resistance an object encounters when moving through a fluid, like air or water. However, in a more localized context, we can refer to the term local drag, which describes the frictional forces that affect objects in a specific environment or area. Understanding local drag is crucial for various fields, including engineering, environmental science, and even urban planning. This essay will explore the implications of local drag in different scenarios, illustrating its importance and relevance.To begin with, let’s consider the impact of local drag in urban environments. In cities, buildings, trees, and other structures create unique wind patterns that can significantly influence the movement of air. For example, when the wind blows through a city, it encounters various obstacles that slow it down, creating areas of high local drag. This phenomenon can lead to reduced air quality and increased pollution levels in certain neighborhoods, as stagnant air traps pollutants close to the ground. Urban planners must take local drag into account when designing cities to ensure that airflow is optimized, promoting better air quality and overall health for residents.Moreover, local drag is also relevant in the field of engineering, particularly in the design of vehicles and aircraft. Engineers must consider how local drag affects performance and fuel efficiency. For instance, when designing a car, the shape of the vehicle can either minimize or exacerbate local drag. A streamlined design reduces resistance, allowing the car to move more efficiently through the air. Conversely, a boxy shape increases local drag, leading to higher fuel consumption. Thus, understanding the principles of local drag enables engineers to create more efficient and environmentally friendly transportation solutions.In addition to urban planning and engineering, local drag plays a significant role in environmental science, especially concerning aquatic ecosystems. When studying water bodies, scientists examine how local drag affects the movement of sediments and aquatic organisms. In rivers, for instance, the flow of water can be hindered by rocks, plants, and other debris, creating areas of local drag. This can impact the distribution of nutrients and sediments, ultimately affecting the health of the ecosystem. Researchers must understand these dynamics to develop effective conservation strategies and manage natural resources sustainably.Furthermore, local drag can also influence sports and recreational activities. Athletes, particularly those involved in swimming, cycling, and running, are often trained to minimize local drag to enhance their performance. For instance, swimmers adopt specific techniques and body positions to reduce water resistance, while cyclists wear aerodynamic gear to cut through the air more efficiently. By understanding and managing local drag, athletes can improve their speed and endurance, leading to better competitive outcomes.In conclusion, the concept of local drag extends far beyond its basic definition in physics. It has profound implications across various fields, from urban planning and engineering to environmental science and sports. Recognizing the significance of local drag allows professionals to make informed decisions that enhance efficiency, improve health outcomes, and promote sustainability. As we continue to navigate the complexities of our environments, a deeper understanding of local drag will undoubtedly play a vital role in shaping our future.

在物理学中，阻力的概念通常与物体在流体（如空气或水）中移动时遇到的阻力相关。然而，在更局部的背景下，我们可以指代术语local drag，它描述了在特定环境或区域内影响物体的摩擦力。理解local drag对于工程、环境科学甚至城市规划等多个领域至关重要。本文将探讨local drag在不同场景中的影响，阐明其重要性和相关性。首先，让我们考虑local drag在城市环境中的影响。在城市中，建筑物、树木和其他结构创造了独特的风模式，这些风模式可以显著影响空气的运动。例如，当风吹过城市时，它会遇到各种障碍，减缓速度，形成高local drag区域。这种现象可能导致某些社区的空气质量下降和污染水平增加，因为静止的空气会将污染物困在地面附近。城市规划者必须考虑local drag，以确保气流得到优化，从而促进居民的空气质量和整体健康。此外，local drag在工程领域也很重要，特别是在车辆和飞机的设计中。工程师必须考虑local drag如何影响性能和燃油效率。例如，在设计汽车时，车辆的形状可以减少或加剧local drag。流线型设计减少了阻力，使汽车能够更有效地穿过空气。相反，方形形状增加了local drag，导致更高的燃油消耗。因此，理解local drag的原理使工程师能够创造出更高效、更环保的交通解决方案。除了城市规划和工程之外，local drag在环境科学中也发挥着重要作用，尤其是在水生生态系统方面。当研究水体时，科学家们考察local drag如何影响沉积物和水生生物的运动。例如，在河流中，水流可能会因为岩石、植物和其他杂物而受到阻碍，形成local drag区域。这可能会影响养分和沉积物的分布，最终影响生态系统的健康。研究人员必须理解这些动态，以制定有效的保护策略并可持续管理自然资源。此外，local drag还可以影响体育和休闲活动。运动员，特别是游泳、自行车和跑步的运动员，通常被训练以最小化local drag来增强他们的表现。例如，游泳运动员采用特定的技术和身体姿势来减少水的阻力，而自行车手则穿着空气动力学装备以更有效地穿透空气。通过理解和管理local drag，运动员可以提高速度和耐力，从而实现更好的竞技结果。总之，local drag的概念远远超出了物理学中的基本定义。它在多个领域具有深远的影响，从城市规划和工程到环境科学和体育。认识到local drag的重要性使专业人士能够做出明智的决策，从而提高效率、改善健康结果并促进可持续性。随着我们继续应对环境的复杂性，对local drag的深入理解无疑将在塑造我们的未来中发挥重要作用。