particle size distribution

简明释义

粒子大小分布

英英释义

例句

1.The particle size distribution of the soil affects its drainage capabilities.

土壤的颗粒大小分布影响其排水能力。

2.We need to analyze the particle size distribution of the cement for better quality control.

我们需要分析水泥的颗粒大小分布以提高质量控制。

3.In pharmaceuticals, the particle size distribution is crucial for drug absorption.

在制药中，颗粒大小分布对药物吸收至关重要。

4.The particle size distribution can be measured using laser diffraction techniques.

可以使用激光衍射技术测量颗粒大小分布。

5.A narrow particle size distribution can lead to more uniform material properties.

较窄的颗粒大小分布可以导致更均匀的材料性质。

作文

Understanding the concept of particle size distribution is crucial in various fields, including materials science, environmental studies, and pharmaceuticals. Particle size distribution refers to the way in which the sizes of particles are spread or distributed in a given sample. This measurement is essential because the physical and chemical properties of materials can vary significantly based on their particle size. For example, in the pharmaceutical industry, the efficacy of a drug can be influenced by the size of its particles. Smaller particles may dissolve more quickly and be absorbed by the body more efficiently than larger ones, leading to faster therapeutic effects.In materials science, particle size distribution plays a vital role in determining the behavior of powders and granules. The flowability, compressibility, and packing density of powders are all affected by how the particles are sized. A well-defined particle size distribution can lead to better processing and handling of materials, which is particularly important in industries such as construction and manufacturing.Environmental studies also heavily rely on the understanding of particle size distribution. For instance, in air quality assessments, the size of particulate matter (PM) can determine its impact on human health and the environment. Smaller particles, such as PM2.5, can penetrate deep into the lungs and even enter the bloodstream, posing significant health risks. Monitoring the particle size distribution of airborne particles helps scientists and policymakers develop strategies to mitigate pollution and protect public health.To accurately measure particle size distribution, several techniques are employed, including laser diffraction, sieve analysis, and dynamic light scattering. Each method has its advantages and limitations, and the choice of technique often depends on the specific requirements of the study. For instance, laser diffraction is widely used for its speed and ability to analyze a wide range of sizes, while sieve analysis is more straightforward but may not capture very fine particles effectively.Moreover, the interpretation of particle size distribution data is essential for making informed decisions in research and industry. Statistical parameters like the mean, median, and standard deviation of particle sizes provide insight into the overall characteristics of the sample. A narrow particle size distribution indicates uniformity, which can be desirable in many applications, while a broad distribution may suggest variability that could affect performance.In conclusion, particle size distribution is a fundamental concept that impacts various scientific and industrial domains. Its significance cannot be overstated, as it influences material behavior, health outcomes, and environmental policies. By employing appropriate measurement techniques and carefully analyzing the data, researchers and professionals can harness the power of particle size distribution to improve product formulations, enhance safety measures, and promote sustainable practices in our society.

理解粒径分布的概念在材料科学、环境研究和制药等多个领域至关重要。粒径分布是指给定样本中颗粒大小的分布方式。这一测量至关重要，因为材料的物理和化学性质可能因其颗粒大小而显著不同。例如，在制药行业，药物的有效性可能会受到其颗粒大小的影响。较小的颗粒可能溶解得更快，并且比大颗粒更有效地被身体吸收，从而导致更快的治疗效果。在材料科学中，粒径分布在确定粉末和颗粒的行为方面起着重要作用。粉末的流动性、可压缩性和堆积密度都受到颗粒大小的影响。良好的粒径分布可以改善材料的加工和处理，这在建筑和制造等行业尤为重要。环境研究也严重依赖对粒径分布的理解。例如，在空气质量评估中，颗粒物（PM）的大小可以决定其对人类健康和环境的影响。较小的颗粒，如PM2.5，可以深入肺部，甚至进入血液，对健康构成重大风险。监测空气中颗粒的粒径分布有助于科学家和政策制定者制定减缓污染和保护公共健康的策略。为了准确测量粒径分布，采用了多种技术，包括激光衍射、筛分分析和动态光散射。每种方法都有其优点和局限性，选择技术往往取决于研究的具体要求。例如，激光衍射因其速度快和能够分析广泛的颗粒大小而被广泛使用，而筛分分析则更为简单，但可能无法有效捕捉到非常细小的颗粒。此外，解释粒径分布数据对做出明智的研究和工业决策至关重要。颗粒大小的均值、中位数和标准差等统计参数提供了有关样本整体特征的见解。狭窄的粒径分布表明均匀性，这在许多应用中是可取的，而宽分布可能表明变异性，这可能影响性能。总之，粒径分布是一个基本概念，影响着多个科学和工业领域。其重要性不容小觑，因为它影响材料行为、健康结果和环境政策。通过采用适当的测量技术并仔细分析数据，研究人员和专业人士可以利用粒径分布的力量来改善产品配方、增强安全措施，并促进我们社会的可持续实践。