grain size analysis

简明释义

粒度分析

英英释义

例句

1.The grain size analysis indicated that the sand was well-sorted and suitable for construction purposes.

这次颗粒大小分析表明，沙子分选良好，适合建筑用途。

2.Environmental scientists use grain size analysis to assess the impact of human activities on coastal erosion.

环境科学家使用颗粒大小分析来评估人类活动对海岸侵蚀的影响。

3.The results of the grain size analysis revealed a significant change in the soil composition over time.

这次颗粒大小分析的结果揭示了土壤成分随时间的显著变化。

4.The geologist conducted a grain size analysis to determine the sediment transport history of the river.

地质学家进行了颗粒大小分析以确定河流的沉积物运输历史。

5.In materials science, grain size analysis is crucial for understanding the mechanical properties of metals.

在材料科学中，颗粒大小分析对于理解金属的机械性能至关重要。

作文

Grain size analysis is a crucial process in various fields such as geology, materials science, and engineering. This analysis involves measuring the size distribution of grains in a given sample, which can provide valuable information about the material's properties and its formation processes. By understanding the grain size, scientists and engineers can infer the history of the material, its strength, and its behavior under different conditions. For instance, in sedimentology, grain size analysis (颗粒大小分析) helps in interpreting past environmental conditions and sediment transport processes. The size of sediment grains can indicate the energy of the transporting medium; larger grains typically suggest high-energy environments, while smaller grains indicate low-energy settings.In materials science, grain size analysis (颗粒大小分析) is essential for determining the mechanical properties of metals and alloys. The grain structure of a material can significantly influence its strength, ductility, and resistance to fracture. For example, finer grains usually result in stronger materials due to the increased area of grain boundaries, which can impede dislocation movement. Therefore, controlling the grain size during processing is vital for achieving desired material characteristics.The methods used for grain size analysis (颗粒大小分析) can vary depending on the type of material being studied. Common techniques include laser diffraction, sieve analysis, and image analysis. Each method has its advantages and limitations, and the choice often depends on the specific requirements of the study. Laser diffraction, for instance, provides rapid and accurate measurements, making it suitable for a wide range of applications. On the other hand, sieve analysis is a more traditional method that is still widely used for granular materials like sand and gravel.Moreover, the results of grain size analysis (颗粒大小分析) can be represented in various forms, such as histograms or cumulative distribution curves. These visual representations help researchers to easily interpret the data and draw meaningful conclusions. Understanding the grain size distribution is critical not only for academic research but also for practical applications in industries such as construction, where the performance of concrete can be influenced by the size of the aggregates used.In conclusion, grain size analysis (颗粒大小分析) is an indispensable tool across multiple disciplines. Its ability to provide insights into the physical properties and historical context of materials makes it invaluable for both scientific research and industrial applications. As technology advances, the methods for conducting grain size analysis (颗粒大小分析) continue to improve, allowing for more precise and comprehensive studies. This ongoing development will undoubtedly enhance our understanding of materials and their behavior in various environments, ultimately contributing to innovations in engineering and technology.