particle size

简明释义

粒子大小

英英释义

例句

1.We need to analyze the particle size to ensure proper filtration.

我们需要分析粒径以确保适当的过滤。

2.Smaller particle sizes often lead to increased surface area for reactions.

较小的粒径通常会导致反应表面积增加。

3.The particle size of the powder affects its solubility in water.

粉末的粒径影响其在水中的溶解度。

4.In this experiment, we will measure the particle size of the sand samples.

在这个实验中，我们将测量沙样本的粒径。

5.The particle size distribution is crucial for determining the quality of the product.

粒径分布对于确定产品质量至关重要。

作文

The concept of particle size is fundamental in various scientific fields, particularly in chemistry and material science. Understanding particle size is crucial because it can significantly influence the properties and behavior of materials. For instance, in pharmaceuticals, the particle size of a drug can affect its solubility and bioavailability. Smaller particles may dissolve more quickly, leading to faster absorption in the body, which is essential for the effectiveness of certain medications.In environmental science, particle size plays a vital role in understanding air quality and pollution. Fine particulate matter, often referred to as PM2.5, consists of particles with a diameter of less than 2.5 micrometers. These tiny particles can penetrate deep into the lungs and even enter the bloodstream, posing significant health risks. Thus, monitoring and controlling particle size in emissions from vehicles and industrial processes is critical for public health.Additionally, in the field of agriculture, particle size affects soil health and crop productivity. The texture of soil, determined by the distribution of different particle sizes, influences water retention, nutrient availability, and root penetration. Farmers and agronomists must consider particle size when selecting soil amendments or fertilizers to optimize plant growth.Furthermore, in the realm of nanotechnology, particle size becomes even more critical. Nanoparticles, which are typically between 1 and 100 nanometers in size, exhibit unique physical and chemical properties that differ from their larger counterparts. These properties can be harnessed for various applications, including drug delivery systems, where the particle size can determine how effectively a drug targets specific cells.In conclusion, the significance of particle size cannot be overstated. It affects a wide range of disciplines, from healthcare to environmental management and agriculture. As research continues to advance, a deeper understanding of particle size will enable scientists and engineers to develop better materials and solutions to complex problems. Whether it is improving drug formulations, enhancing soil quality, or mitigating pollution, the study of particle size remains an essential area of investigation in our quest for innovation and sustainability.

“粒径”这一概念在多个科学领域中至关重要，尤其是在化学和材料科学中。理解“粒径”至关重要，因为它可以显著影响材料的性质和行为。例如，在制药行业，药物的“粒径”可以影响其溶解度和生物利用度。较小的颗粒可能更快溶解，从而导致在体内的吸收速度加快，这对某些药物的有效性至关重要。在环境科学中，“粒径”在理解空气质量和污染方面起着重要作用。细颗粒物，通常被称为PM2.5，指的是直径小于2.5微米的颗粒。这些微小的颗粒能够深入肺部，甚至进入血液，对健康构成重大风险。因此，监测和控制来自车辆和工业过程的“粒径”对于公共健康至关重要。此外，在农业领域，“粒径”影响土壤健康和作物生产力。土壤的质地由不同“粒径”的分布决定，影响水分保持、养分可用性和根系渗透。农民和农艺师在选择土壤改良剂或肥料时必须考虑“粒径”，以优化植物生长。此外，在纳米技术领域，“粒径”变得更加关键。纳米颗粒通常在1到100纳米之间，展现出与其较大对应物不同的独特物理和化学性质。这些性质可以用于各种应用，包括药物递送系统，其中“粒径”可以决定药物如何有效地靶向特定细胞。总之，“粒径”的重要性不容小觑。它影响着从医疗保健到环境管理和农业的广泛学科。随着研究的不断推进，对“粒径”的深入理解将使科学家和工程师能够开发出更好的材料和解决复杂问题的方案。无论是改善药物配方、增强土壤质量，还是减轻污染，对“粒径”的研究仍然是我们追求创新和可持续发展的重要领域。