deposition coefficient

简明释义

熔敷系数

英英释义

例句

1.In thin film deposition, the deposition coefficient affects the uniformity of the film.

在薄膜沉积中，沉积系数影响薄膜的均匀性。

2.A higher deposition coefficient indicates a more efficient process for coating surfaces.

更高的沉积系数表明涂覆表面的过程更有效。

3.The deposition coefficient can vary significantly depending on the substrate material.

根据基材材料，沉积系数可能会有显著变化。

4.Researchers measured the deposition coefficient of various gases to optimize their reactions.

研究人员测量了各种气体的沉积系数以优化反应。

5.The deposition coefficient is critical in determining how materials are layered in semiconductor manufacturing.

在半导体制造中，沉积系数对于材料如何分层至关重要。

作文

The study of atmospheric sciences often includes various parameters that influence the behavior of pollutants and aerosols in the air. One such parameter is the deposition coefficient, which plays a critical role in understanding how particles settle out of the atmosphere onto surfaces. The deposition coefficient can be defined as a measure of the rate at which a substance is deposited from the atmosphere onto a given surface area over time. This coefficient is essential for modeling air quality, predicting the fate of airborne pollutants, and assessing their impact on human health and the environment.In atmospheric chemistry, the deposition coefficient quantifies the efficiency of deposition processes, which include gravitational settling, Brownian diffusion, and turbulent diffusion. Each of these processes contributes to the overall deposition of particles, with varying effectiveness depending on the size and characteristics of the particles involved. For instance, larger particles tend to settle more quickly due to gravity, resulting in a higher deposition coefficient. Conversely, smaller particles may remain suspended in the atmosphere for extended periods, leading to a lower deposition coefficient.Understanding the factors that influence the deposition coefficient is crucial for researchers and policymakers alike. Environmental conditions such as wind speed, temperature, and humidity can significantly affect the deposition rates of pollutants. For example, during high wind events, the turbulence can enhance the transport and deposition of aerosols, thereby increasing the deposition coefficient. On the other hand, in calm conditions, the deposition rates may decrease, leading to prolonged exposure of pollutants in the air.Moreover, the deposition coefficient is not only relevant for atmospheric studies but also has implications for various fields, including agriculture, forestry, and public health. In agriculture, understanding the deposition of pesticides and fertilizers can help optimize their application and minimize environmental impact. In forestry, knowledge of how pollutants deposit on leaves and soil can inform forest management practices and ecosystem health assessments. Similarly, in public health, knowing the deposition coefficient of harmful substances can aid in risk assessments and the development of strategies to mitigate exposure.In conclusion, the deposition coefficient is a vital parameter in the study of atmospheric processes and pollution dynamics. Its significance extends beyond mere scientific curiosity, influencing practical applications in environmental management and public health. As researchers continue to explore the complexities of atmospheric interactions, the deposition coefficient will remain a key focus area, contributing to our understanding of how pollutants behave in the atmosphere and their subsequent effects on our planet and well-being.

大气科学的研究通常包括影响污染物和气溶胶在空气中行为的各种参数。其中一个参数是沉积系数，它在理解颗粒如何从大气中沉降到表面方面起着关键作用。沉积系数可以定义为一种物质从大气中沉积到给定表面积上的速率的度量，单位通常为时间。这个系数对于建模空气质量、预测空气中污染物的命运以及评估它们对人类健康和环境的影响至关重要。在大气化学中，沉积系数量化了沉积过程的效率，包括重力沉降、布朗扩散和湍流扩散。这些过程各自对颗粒的总体沉积做出贡献，具体效果因颗粒的大小和特性而异。例如，较大的颗粒由于重力作用往往沉降得更快，因此其沉积系数较高。相反，较小的颗粒可能会在大气中悬浮较长时间，导致沉积系数较低。理解影响沉积系数的因素对于研究人员和政策制定者而言至关重要。环境条件如风速、温度和湿度都能显著影响污染物的沉积速率。例如，在强风事件期间，湍流可以增强气溶胶的输送和沉积，从而增加沉积系数。另一方面，在平静的条件下，沉积速率可能会降低，导致污染物在空气中的暴露时间延长。此外，沉积系数不仅与大气研究相关，还对农业、林业和公共健康等多个领域具有重要意义。在农业中，了解农药和肥料的沉积情况可以帮助优化施用方法并减少对环境的影响。在林业中，了解污染物如何沉积在叶子和土壤上可以为森林管理实践和生态系统健康评估提供信息。同样，在公共健康领域，了解有害物质的沉积系数可以帮助进行风险评估并制定减轻暴露的策略。总之，沉积系数是研究大气过程和污染动态的重要参数。它的重要性超越了单纯的科学好奇心，影响着环境管理和公共健康的实际应用。随着研究人员继续探索大气相互作用的复杂性，沉积系数将仍然是一个关键关注领域，有助于我们理解污染物在大气中的行为及其对地球和人类福祉的后续影响。