aerodynamic diameter

简明释义

气体动力学直径

英英释义

例句

1.Researchers often use a cascade impactor to measure the aerodynamic diameter of airborne particles.

研究人员通常使用级联沉降器来测量空气中颗粒的aerodynamic diameter。

2.Different types of aerosols have distinct aerodynamic diameters, affecting their transport in the atmosphere.

不同类型的气溶胶具有不同的aerodynamic diameter，影响它们在大气中的运输。

3.The inhalation efficiency of a drug can be influenced by its aerodynamic diameter.

药物的吸入效率可能受到其aerodynamic diameter的影响。

4.The aerodynamic diameter of the particles determines how deeply they can penetrate the respiratory system.

颗粒的aerodynamic diameter决定了它们可以深入呼吸系统的程度。

5.In air quality studies, measuring the aerodynamic diameter helps scientists understand the behavior of pollutants.

在空气质量研究中，测量aerodynamic diameter有助于科学家理解污染物的行为。

作文

Understanding the concept of aerodynamic diameter is crucial in various fields, particularly in environmental science and engineering. The term refers to the effective diameter of a particle as it moves through air, which influences how particles behave in the atmosphere. Essentially, it helps in assessing how particles interact with air currents and their subsequent impact on human health and the environment. To grasp the significance of aerodynamic diameter, one must first consider the properties of airborne particles. These particles can vary significantly in size, shape, and density, which affects their motion and dispersion in the air. For instance, larger particles tend to settle quickly due to gravity, while smaller particles can remain suspended for extended periods. The aerodynamic diameter provides a standardized measure that accounts for these variables, allowing researchers to predict the behavior of particles more accurately.In air quality studies, understanding the aerodynamic diameter is essential for evaluating the potential health risks associated with inhalation of particulate matter. Particles with a diameter less than 10 micrometers, often referred to as PM10, can penetrate deep into the lungs and may cause respiratory issues. On the other hand, particles with a diameter less than 2.5 micrometers (PM2.5) can enter the bloodstream, leading to more severe health effects. By measuring the aerodynamic diameter, scientists can categorize these particles and assess their risk levels more effectively.Moreover, the aerodynamic diameter plays a significant role in the design of filtration systems and air purifiers. Engineers need to understand the sizes of particles they aim to filter out to create efficient systems. For example, filters designed to capture PM2.5 must have the capacity to trap particles within that aerodynamic diameter range. This understanding helps in developing technologies that improve indoor air quality and protect public health.In addition to health implications, the aerodynamic diameter also has environmental consequences. For example, when studying atmospheric phenomena like smog or haze, the aerodynamic diameter helps scientists understand how pollutants disperse and interact with weather patterns. This knowledge is vital for developing strategies to mitigate air pollution and its effects on climate change.Furthermore, the aerodynamic diameter is not just limited to natural particles; it is also relevant in industrial applications. In manufacturing processes, understanding the behavior of aerosols and powders can lead to improved efficiency and safety. For instance, in pharmaceutical production, the aerodynamic diameter of drug particles can affect how they are delivered and absorbed in the human body.In conclusion, the concept of aerodynamic diameter is integral to multiple disciplines, including health sciences, environmental studies, and engineering. By providing a comprehensive understanding of how particles behave in the air, it enables researchers and engineers to address critical challenges related to air quality and public health. As we continue to confront issues such as pollution and climate change, the importance of understanding aerodynamic diameter will only grow, highlighting the need for ongoing research and innovation in this area.

理解aerodynamic diameter的概念在多个领域中至关重要，尤其是在环境科学和工程领域。这个术语指的是粒子在空气中移动时的有效直径，这会影响粒子的行为。实际上，它有助于评估粒子如何与气流相互作用以及它们对人类健康和环境的后续影响。要掌握aerodynamic diameter的重要性，首先必须考虑空气中颗粒物的特性。这些颗粒物的大小、形状和密度可以显著不同，这影响了它们的运动和扩散。例如，较大的颗粒由于重力的作用往往会迅速沉降，而较小的颗粒则可以长时间悬浮在空气中。aerodynamic diameter提供了一个标准化的测量方法，考虑了这些变量，从而使研究人员能够更准确地预测粒子的行为。在空气质量研究中，理解aerodynamic diameter对于评估吸入颗粒物所带来的潜在健康风险至关重要。直径小于10微米的颗粒物，通常被称为PM10，可以深入肺部并可能导致呼吸问题。另一方面，直径小于2.5微米（PM2.5）的颗粒物可以进入血液，导致更严重的健康影响。通过测量aerodynamic diameter，科学家们可以对这些颗粒进行分类，并更有效地评估其风险水平。此外，aerodynamic diameter在过滤系统和空气净化器的设计中也起着重要作用。工程师需要了解他们旨在过滤的颗粒物的大小，以创建高效的系统。例如，旨在捕获PM2.5的过滤器必须具备捕捉该aerodynamic diameter范围内颗粒物的能力。这种理解有助于开发改善室内空气质量和保护公共健康的技术。除了健康影响，aerodynamic diameter还有环境后果。例如，在研究像雾霾或烟雾这样的气象现象时，aerodynamic diameter帮助科学家理解污染物如何扩散并与天气模式相互作用。这一知识对于制定减缓空气污染及其对气候变化影响的策略至关重要。此外，aerodynamic diameter不仅限于自然颗粒；它在工业应用中也很相关。在制造过程中，理解气溶胶和粉末的行为可以提高效率和安全性。例如，在制药生产中，药物颗粒的aerodynamic diameter可能会影响它们的递送和在人体内的吸收。总之，aerodynamic diameter的概念对健康科学、环境研究和工程等多个学科至关重要。通过提供对颗粒在空气中行为的全面理解，它使研究人员和工程师能够应对与空气质量和公共健康相关的关键挑战。随着我们继续面对污染和气候变化等问题，理解aerodynamic diameter的重要性只会增加，突显出在这一领域持续研究和创新的必要性。