particle size

简明释义

粒度

英英释义

例句

1.In soil science, particle size 颗粒大小 determines the water retention capacity of the soil.

在土壤科学中，颗粒大小 particle size 决定了土壤的保水能力。

2.The particle size 颗粒大小 of the sand affects its suitability for construction.

沙子的颗粒大小 particle size 影响其在建筑中的适用性。

3.Researchers found that smaller particle sizes 颗粒大小 lead to faster reaction rates in chemical processes.

研究人员发现，更小的颗粒大小 particle size 会导致化学过程中的反应速率更快。

4.The effectiveness of the drug can be influenced by the particle size 颗粒大小 of its active ingredients.

药物的有效性可能会受到其活性成分的颗粒大小 particle size 的影响。

5.Manufacturers must control the particle size 颗粒大小 to ensure product consistency.

制造商必须控制颗粒大小 particle size 以确保产品的一致性。

作文

Understanding the concept of particle size is essential in various scientific fields, including chemistry, physics, and environmental science. Particle size refers to the dimensions or diameter of individual particles in a material, which can significantly influence the properties and behavior of that material. For instance, in the pharmaceutical industry, the particle size of drug compounds can affect their solubility and bioavailability, ultimately impacting the effectiveness of medications. Smaller particles generally have a larger surface area relative to their volume, allowing for quicker dissolution in the body’s fluids.In environmental science, particle size plays a crucial role in air quality and pollution control. Fine particulate matter (PM2.5), which consists of particles with a diameter of less than 2.5 micrometers, can penetrate deep into the lungs and even enter the bloodstream, posing serious health risks. Understanding the particle size distribution of airborne pollutants helps scientists and policymakers develop strategies to mitigate their impact on public health.Moreover, in the field of materials science, the particle size of powders can influence the manufacturing processes and the final properties of products. For example, in the production of ceramics, the particle size can affect the sintering process, which is critical for achieving desired strength and durability in ceramic materials. By controlling the particle size, manufacturers can optimize the performance characteristics of their products.The measurement and analysis of particle size can be conducted using various techniques, including laser diffraction, dynamic light scattering, and electron microscopy. Each method has its advantages and limitations, and the choice of technique often depends on the specific application and the range of particle sizes being studied. For instance, laser diffraction is commonly used for larger particles, while dynamic light scattering is more suitable for nanoparticles.In conclusion, the significance of particle size cannot be overstated. It affects a wide range of applications across different scientific disciplines. From improving drug delivery systems to assessing environmental pollutants and enhancing material properties, understanding and controlling particle size is vital for innovation and safety. As technology advances, the ability to precisely measure and manipulate particle size will likely lead to new breakthroughs in various fields, making it an area of ongoing research and development.

理解粒子大小的概念在化学、物理和环境科学等多个科学领域中至关重要。粒子大小是指材料中单个粒子的尺寸或直径，这可以显著影响该材料的性质和行为。例如，在制药行业中，药物化合物的粒子大小可以影响其溶解度和生物利用度，最终影响药物的有效性。较小的颗粒通常相对于其体积具有更大的表面积，从而允许在体液中更快地溶解。在环境科学中，粒子大小在空气质量和污染控制中起着至关重要的作用。细颗粒物（PM2.5）由直径小于2.5微米的颗粒组成，可以深入肺部，甚至进入血液，带来严重的健康风险。了解空气污染物的粒子大小分布有助于科学家和政策制定者制定减轻其对公共健康影响的策略。此外，在材料科学领域，粉末的粒子大小可以影响制造过程和产品的最终特性。例如，在陶瓷生产中，粒子大小可以影响烧结过程，这对实现陶瓷材料所需的强度和耐久性至关重要。通过控制粒子大小，制造商可以优化其产品的性能特性。粒子大小的测量和分析可以使用多种技术进行，包括激光衍射、动态光散射和电子显微镜。每种方法都有其优缺点，选择技术通常取决于具体应用和研究的粒子大小范围。例如，激光衍射通常用于较大的颗粒，而动态光散射更适合纳米颗粒。总之，粒子大小的重要性不容忽视。它影响着不同科学学科中的广泛应用。从改善药物输送系统到评估环境污染物，再到增强材料性能，理解和控制粒子大小对创新和安全至关重要。随着技术的进步，精确测量和操控粒子大小的能力可能会导致各个领域的新突破，使其成为一个持续研究和发展的领域。