particle diameter

简明释义

颗粒直径

英英释义

例句

1.The particle diameter (颗粒直径) of the aerosol affects how far the particles can travel in the air.

气溶胶的颗粒直径 (particle diameter) 影响颗粒在空气中能传播多远。

2.The size of the filter is determined by the particle diameter (颗粒直径) of the contaminants it can capture.

过滤器的大小由它能捕获的污染物的颗粒直径 (particle diameter) 决定。

3.In this experiment, we measured the particle diameter (颗粒直径) to assess the effectiveness of the catalyst.

在这个实验中，我们测量了颗粒直径 (particle diameter) 以评估催化剂的有效性。

4.Researchers found that the particle diameter (颗粒直径) influences the rate of dissolution in the solution.

研究人员发现，颗粒直径 (particle diameter) 影响溶液中的溶解速率。

5.To ensure uniformity, the particle diameter (颗粒直径) of the powder must be controlled during manufacturing.

为了确保均匀性，粉末的颗粒直径 (particle diameter) 在生产过程中必须受到控制。

作文

The concept of particle diameter is fundamental in various scientific fields, particularly in materials science, chemistry, and environmental studies. Understanding the size of particles can significantly influence how materials behave and interact with their surroundings. The particle diameter refers to the measurement of a particle across its widest point, essentially providing insight into its size. This measurement is crucial because it affects properties such as surface area, reactivity, and the behavior of particles in different mediums. For instance, in the field of nanotechnology, particles are often measured in nanometers, where even a slight change in particle diameter can lead to dramatic changes in physical and chemical properties.In environmental science, the particle diameter of pollutants can determine how they disperse in the air or water, influencing their toxicity and impact on human health and ecosystems. Smaller particles, typically those less than 10 micrometers in diameter, can penetrate deep into the lungs when inhaled, leading to serious health issues. Therefore, understanding the particle diameter of these pollutants is essential for assessing risks and implementing effective regulations.Moreover, in pharmaceuticals, the particle diameter of drug formulations can affect their bioavailability and how quickly they are absorbed in the body. A smaller particle diameter often leads to a larger surface area, which can enhance the dissolution rate of a drug, making it more effective. Consequently, pharmaceutical scientists meticulously control the particle diameter during the manufacturing process to ensure optimal therapeutic outcomes.In addition to these applications, the measurement of particle diameter plays a significant role in industries such as food production and cosmetics. For example, in food technology, the particle diameter of ingredients can affect texture, flavor release, and overall product quality. Similarly, in cosmetics, the particle diameter of pigments and other components can determine how products feel on the skin and how they appear visually.To measure particle diameter, various techniques are employed, including laser diffraction, dynamic light scattering, and microscopy. Each method has its advantages and limitations, and the choice of technique often depends on the specific requirements of the study or application. For instance, laser diffraction is widely used for measuring the particle diameter of powders, while dynamic light scattering is preferred for analyzing colloidal suspensions.In conclusion, the particle diameter is a critical parameter that influences a wide range of scientific and industrial processes. From environmental impact assessments to drug formulation and food technology, understanding and controlling the particle diameter is essential for optimizing performance and ensuring safety. As research continues to advance, the importance of accurately measuring and manipulating particle diameter will only grow, paving the way for innovations across multiple disciplines.

“粒径”这一概念在材料科学、化学和环境研究等多个科学领域中至关重要。了解粒子的大小可以显著影响材料如何与其周围环境相互作用和表现。“粒径”是指粒子在最宽点的测量，基本上提供了其大小的洞察。这一测量至关重要，因为它影响诸如表面积、反应性以及粒子在不同介质中的行为等属性。例如，在纳米技术领域，粒子通常以纳米为单位进行测量，其中即使是微小的“粒径”变化也可能导致物理和化学性质的剧烈变化。在环境科学中，污染物的“粒径”可以决定它们在空气或水中如何扩散，从而影响其毒性及对人类健康和生态系统的影响。较小的粒子，通常直径小于10微米，可以在吸入时深入肺部，导致严重的健康问题。因此，了解这些污染物的“粒径”对于评估风险和实施有效的法规至关重要。此外，在制药行业，药物配方的“粒径”可以影响其生物利用度以及被身体吸收的速度。较小的“粒径”通常会导致更大的表面积，这可以增强药物的溶解速率，使其更有效。因此，制药科学家在制造过程中严格控制“粒径”，以确保最佳的治疗效果。除了这些应用之外，“粒径”的测量在食品生产和化妆品等行业中也发挥着重要作用。例如，在食品技术中，成分的“粒径”可以影响质地、风味释放和整体产品质量。同样，在化妆品中，颜料和其他成分的“粒径”可以决定产品在皮肤上的感觉以及视觉效果。为了测量“粒径”，采用了多种技术，包括激光衍射、动态光散射和显微镜。每种方法都有其优缺点，技术选择通常取决于研究或应用的具体要求。例如，激光衍射广泛用于测量粉末的“粒径”，而动态光散射则更适合分析胶体悬浮液。总之，“粒径”是一个关键参数，影响着广泛的科学和工业过程。从环境影响评估到药物配方和食品技术，理解和控制“粒径”对于优化性能和确保安全至关重要。随着研究的不断进展，准确测量和操控“粒径”的重要性将愈加突出，为多个学科的创新铺平道路。