atmospheric density

简明释义

空气密度

英英释义

例句

1.Pilots must account for atmospheric density when calculating takeoff distances.

飞行员在计算起飞距离时必须考虑大气密度。

2.Meteorologists use atmospheric density to predict weather patterns.

气象学家利用大气密度来预测天气模式。

3.The atmospheric density at sea level is higher than that at the top of a mountain.

海平面的大气密度高于山顶的大气密度。

4.The spacecraft's trajectory was adjusted based on the changes in atmospheric density.

航天器的轨道根据大气密度的变化进行了调整。

5.As altitude increases, atmospheric density decreases significantly.

随着海拔的增加，大气密度显著降低。

作文

The concept of atmospheric density refers to the mass of air per unit volume in the Earth's atmosphere. This measurement is crucial for understanding various meteorological phenomena and plays a significant role in aviation, environmental science, and even space exploration. As we ascend into the atmosphere, the atmospheric density decreases. This is primarily due to the gravitational pull of the Earth, which holds air molecules closer to the surface. At sea level, the atmospheric density is at its highest, approximately 1.225 kg/m³. However, as one moves higher in altitude, such as climbing a mountain or flying in an airplane, the density drops significantly. Understanding atmospheric density is essential for pilots and aerospace engineers because it directly affects lift and drag on aircraft. For instance, when an airplane takes off from a runway, it relies on the lift generated by the wings, which is influenced by the surrounding atmospheric density. In high-altitude areas where the atmospheric density is lower, planes require longer runways and more powerful engines to achieve the necessary lift. In addition to aviation, atmospheric density also impacts weather patterns and climate. Meteorologists use this information to predict weather changes, as variations in atmospheric density can lead to different air pressure systems. For example, areas with low atmospheric density can experience stormy weather, while regions with high density may have clear skies. Moreover, the atmospheric density is a critical factor in environmental studies. It affects how pollutants disperse in the atmosphere and influences air quality. Higher atmospheric density can trap pollutants close to the ground, leading to smog and health issues for urban populations. Understanding these dynamics helps scientists develop strategies to combat pollution and improve air quality. In the realm of space exploration, atmospheric density is vital for spacecraft re-entry calculations. As a spacecraft descends back to Earth, it encounters varying levels of atmospheric density, which affects its speed and trajectory. Engineers must account for these changes to ensure a safe landing. In conclusion, atmospheric density is a fundamental concept that influences many aspects of our lives, from the weather we experience to the flights we take. By studying and understanding atmospheric density, we can make informed decisions that impact aviation safety, environmental health, and even our understanding of climate change. As we continue to explore our atmosphere and beyond, the significance of atmospheric density will only grow, highlighting the interconnectedness of our planet's systems.

‘大气密度’这一概念是指地球大气中每单位体积的空气质量。这一测量对于理解各种气象现象至关重要，并在航空、环境科学甚至太空探索中发挥着重要作用。随着我们向大气层升高，‘大气密度’会降低。这主要是由于地球的引力将空气分子牢牢吸引到表面。在海平面上，‘大气密度’处于最高点，约为1.225千克/立方米。然而，当人们在高度上移动，例如爬山或乘坐飞机时，密度会显著下降。理解‘大气密度’对于飞行员和航空工程师至关重要，因为它直接影响飞机的升力和阻力。例如，当一架飞机从跑道起飞时，它依赖于机翼产生的升力，而这受到周围‘大气密度’的影响。在高海拔地区，由于‘大气密度’较低，飞机需要更长的跑道和更强大的发动机才能达到必要的升力。除了航空，‘大气密度’还影响天气模式和气候。气象学家使用这些信息来预测天气变化，因为‘大气密度’的变化可能导致不同的气压系统。例如，‘大气密度’较低的地区可能会经历暴风雨天气，而密度较高的区域可能会有晴朗的天空。此外，‘大气密度’是环境研究中的一个关键因素。它影响污染物在大气中的扩散并影响空气质量。较高的‘大气密度’可以将污染物困在靠近地面的地方，导致城市人口出现雾霾和健康问题。理解这些动态有助于科学家制定对策，以应对污染并改善空气质量。在太空探索领域，‘大气密度’对于航天器再入计算至关重要。当航天器重新降落到地球时，会遇到不同水平的‘大气密度’，这会影响其速度和轨迹。工程师必须考虑这些变化，以确保安全着陆。总之，‘大气密度’是一个基本概念，影响着我们生活的许多方面，从我们经历的天气到我们乘坐的航班。通过研究和理解‘大气密度’，我们可以做出影响航空安全、环境健康甚至对气候变化理解的明智决策。随着我们继续探索我们的气氛和更远的地方，‘大气密度’的重要性只会增加，突显出我们星球系统之间的相互联系。