grain size distribution

简明释义

粒度级配

英英释义

例句

1.The researchers used a laser diffraction method to measure the grain size distribution 颗粒大小分布 of the soil.

研究人员使用激光衍射法测量土壤的颗粒大小分布 grain size distribution。

2.The grain size distribution 颗粒大小分布 of the rock samples indicated a history of high-energy transport.

岩石样本的颗粒大小分布 grain size distribution表明经历了高能量的运输历史。

3.In environmental studies, the grain size distribution 颗粒大小分布 helps assess sediment transport in rivers.

在环境研究中，颗粒大小分布 grain size distribution有助于评估河流中的沉积物运输。

4.The geologist analyzed the grain size distribution 颗粒大小分布 of the sediment samples to determine their origin.

地质学家分析了沉积样本的颗粒大小分布 grain size distribution以确定其来源。

5.Understanding the grain size distribution 颗粒大小分布 is crucial for predicting the behavior of soil during construction.

理解颗粒大小分布 grain size distribution对预测施工期间土壤的行为至关重要。

作文

Understanding the concept of grain size distribution is crucial in various fields such as geology, materials science, and engineering. The term refers to the proportion of different grain sizes present in a given sample of sediment or material. This distribution can significantly influence the physical properties of the material, including its strength, porosity, and permeability. For instance, in the context of soil science, the grain size distribution determines how well water drains through the soil and how it retains nutrients. In geological studies, the grain size distribution provides insights into the processes that formed the sedimentary layers. By analyzing the size and distribution of grains, scientists can infer the energy conditions of the environment where the sediment was deposited. Coarse grains typically indicate high-energy environments, like rivers or beaches, while fine grains suggest low-energy settings, such as deep lakes or ocean floors. Moreover, in materials science, the grain size distribution plays a pivotal role in determining the mechanical properties of metals and alloys. Smaller grains generally lead to stronger materials due to the grain boundary strengthening mechanism, which impedes dislocation movement. Therefore, understanding the grain size distribution allows engineers to design materials with specific characteristics tailored for their applications. The measurement of grain size distribution can be performed using various techniques, such as sieving, laser diffraction, and digital image analysis. Each method has its advantages and limitations, depending on the type of material and the required accuracy. For example, sieving is a straightforward technique suitable for larger particles, while laser diffraction can provide detailed information about finer particles. In conclusion, the grain size distribution is a fundamental aspect that affects many scientific and engineering disciplines. Its implications range from environmental assessments to material performance in engineering applications. Understanding this concept not only aids in academic research but also enhances practical applications in industries such as construction, agriculture, and environmental management. By grasping the significance of grain size distribution, professionals can make informed decisions that lead to better outcomes in their respective fields.

理解粒径分布的概念在地质学、材料科学和工程等多个领域至关重要。这个术语指的是给定沉积物或材料样本中不同粒径的比例。这种分布会显著影响材料的物理特性，包括其强度、孔隙率和渗透性。例如，在土壤科学的背景下，粒径分布决定了水在土壤中的排水能力以及土壤对养分的保持能力。在地质研究中，粒径分布提供了对沉积层形成过程的深入了解。通过分析颗粒的大小和分布，科学家可以推断出沉积物沉积时环境的能量条件。粗颗粒通常表明高能环境，如河流或海滩，而细颗粒则暗示低能设置，例如深湖或海洋底部。此外，在材料科学中，粒径分布在确定金属和合金的机械性能方面起着关键作用。较小的颗粒一般会导致更强的材料，因为晶界强化机制会阻碍位错运动。因此，理解粒径分布使工程师能够设计具有特定特性的材料，以适应其应用。粒径分布的测量可以使用多种技术进行，例如筛分、激光衍射和数字图像分析。每种方法都有其优缺点，具体取决于材料类型和所需的准确性。例如，筛分是一种简单的方法，适用于较大的颗粒，而激光衍射可以提供关于更细颗粒的详细信息。总之，粒径分布是影响许多科学和工程学科的基本方面。它的影响范围从环境评估到工程应用中的材料性能。理解这一概念不仅有助于学术研究，还增强了在建筑、农业和环境管理等行业的实际应用。通过掌握粒径分布的重要性，专业人士可以做出明智的决策，从而在各自领域取得更好的成果。