molecular diffusion

简明释义

分子扩散

英英释义

例句

1.In water treatment, contaminants are removed by molecular diffusion processes.

在水处理过程中，污染物通过分子扩散过程被去除。

2.The rate of molecular diffusion can be affected by temperature and pressure.

温度和压力会影响分子扩散的速率。

3.In the process of respiration, oxygen enters the bloodstream through molecular diffusion.

在呼吸过程中，氧气通过分子扩散进入血液。

4.Scientists study molecular diffusion to understand how substances mix in gases and liquids.

科学家研究分子扩散以理解物质在气体和液体中的混合方式。

5.The smell of perfume spreads in the room due to molecular diffusion.

香水的气味在房间内扩散是由于分子扩散。

作文

The concept of molecular diffusion refers to the process by which molecules move from an area of higher concentration to an area of lower concentration. This phenomenon is fundamental in various scientific fields, including chemistry, biology, and physics. Understanding molecular diffusion is crucial for comprehending how substances interact within different environments, whether it be in a laboratory setting or in nature. In chemistry, molecular diffusion plays a vital role in reactions. For instance, when two reactants are mixed, the molecules of each substance begin to spread out and intermingle due to molecular diffusion. The rate at which this occurs can significantly impact the speed of the reaction, as the more rapidly the molecules diffuse, the quicker they can collide and react with one another. Factors such as temperature, pressure, and the nature of the substances involved can influence the rate of molecular diffusion. Higher temperatures typically increase molecular motion, resulting in faster diffusion rates.In biological systems, molecular diffusion is essential for processes like respiration and nutrient uptake. For example, oxygen molecules diffuse from the alveoli in the lungs into the bloodstream, where they are transported to cells throughout the body. Similarly, nutrients from digested food diffuse through the intestinal walls into the bloodstream. This passive transport mechanism is vital for maintaining homeostasis in organisms, ensuring that essential substances reach the cells that need them. Without molecular diffusion, many life-sustaining processes would be severely impaired.In environmental science, molecular diffusion helps explain how pollutants disperse in the air and water. When a pollutant is released into the environment, its molecules will naturally spread out from the source due to molecular diffusion. Understanding this process allows scientists to predict the movement of contaminants and devise strategies for remediation. For example, knowing how quickly a toxic substance diffuses can help in assessing the potential risk it poses to ecosystems and human health.Moreover, molecular diffusion is also a key factor in industrial applications, such as the design of chemical reactors and separation processes. Engineers must consider diffusion rates when developing systems for producing chemicals efficiently. By optimizing the conditions under which molecular diffusion occurs, they can enhance product yields and reduce waste.In conclusion, molecular diffusion is a fundamental process that impacts numerous aspects of science and daily life. From facilitating chemical reactions to supporting biological functions and influencing environmental dynamics, understanding this phenomenon is essential. As research continues to evolve, the implications of molecular diffusion will undoubtedly expand, revealing new insights into the interconnectedness of various scientific disciplines and the natural world. In Chinese, molecular diffusion translates to "分子扩散", which captures the essence of this important scientific concept. By studying molecular diffusion, we gain a deeper appreciation of the dynamic interactions that shape our world.

“分子扩散”的概念是指分子从高浓度区域移动到低浓度区域的过程。这种现象在化学、生物学和物理学等多个科学领域中都是基础的。理解分子扩散对理解物质在不同环境中的相互作用至关重要，无论是在实验室环境中还是在自然界中。在化学中，分子扩散在反应中起着至关重要的作用。例如，当两种反应物混合时，每种物质的分子开始由于分子扩散而扩散并交织在一起。这一过程的速率会显著影响反应的速度，因为分子扩散越快，它们碰撞并相互反应的速度就越快。温度、压力和所涉及物质的性质等因素都会影响分子扩散的速率。较高的温度通常会增加分子的运动，从而导致更快的扩散速率。在生物系统中，分子扩散对呼吸和养分摄取等过程至关重要。例如，氧气分子从肺泡扩散到血液中，在那里它们被运输到全身的细胞中。同样，消化食物中的养分通过肠壁扩散进入血液。这种被动运输机制对于维持生物体的稳态至关重要，确保必需物质到达需要它们的细胞。如果没有分子扩散，许多维持生命的过程将受到严重影响。在环境科学中，分子扩散有助于解释污染物在空气和水中的扩散。当污染物释放到环境中时，其分子会由于分子扩散而自然地从源头扩散开来。理解这一过程使科学家能够预测污染物的运动，并制定修复策略。例如，了解有毒物质扩散的速度可以帮助评估其对生态系统和人类健康的潜在风险。此外，分子扩散在工业应用中也是一个关键因素，例如化学反应器和分离过程的设计。工程师在开发高效生产化学品的系统时必须考虑扩散速率。通过优化分子扩散分子扩散是影响科学和日常生活各个方面的基本过程。从促进化学反应到支持生物功能，再到影响环境动态，理解这一现象是必不可少的。随着研究的不断发展，分子扩散的意义无疑会扩展，揭示出科学各学科和自然世界之间相互联系的新见解。在中文中，分子扩散的翻译为“分子扩散”，这捕捉了这个重要科学概念的本质。通过研究分子扩散，我们对塑造我们世界的动态相互作用有了更深刻的理解。