grain size analysis

简明释义

粒径分析

英英释义

例句

1.The geologist performed 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。

2.The results of the grain size analysis were critical for understanding the soil's drainage capabilities.

这次颗粒大小分析的结果对于理解土壤的排水能力至关重要。

3.In our study, grain size analysis revealed that the sand was predominantly fine-grained.

在我们的研究中，颗粒大小分析显示沙子主要是细颗粒。

4.The grain size analysis indicated a significant change in sedimentation patterns over time.

这项颗粒大小分析表明沉积模式随着时间的推移发生了显著变化。

5.Using grain size analysis, researchers were able to classify the samples into different sedimentary environments.

通过使用颗粒大小分析，研究人员能够将样本分类到不同的沉积环境中。

作文

Grain size analysis is a crucial technique used in various fields such as geology, materials science, and engineering. It refers to the process of measuring and categorizing the sizes of grains in a given sample, which can include soil, sediment, or any granular material. The significance of grain size analysis (颗粒大小分析) lies in its ability to provide insights into the physical properties and behavior of materials. For instance, in geology, understanding the grain size distribution of sedimentary rocks can reveal information about the depositional environment and the energy conditions under which the sediments were deposited.In materials science, grain size analysis (颗粒大小分析) plays a vital role in determining the mechanical properties of metals and alloys. The size of the grains within a metallic structure can influence its strength, ductility, and toughness. Smaller grains typically lead to stronger materials due to the grain boundary strengthening mechanism, while larger grains may result in increased ductility. Therefore, engineers and scientists often conduct grain size analysis (颗粒大小分析) to optimize the properties of materials for specific applications.The methods employed for grain size analysis (颗粒大小分析) can vary depending on the type of material being studied. Common techniques include optical microscopy, scanning electron microscopy (SEM), and laser diffraction. Optical microscopy allows researchers to visually assess the grain sizes in a sample, while SEM provides more detailed images at a higher magnification. Laser diffraction, on the other hand, is a rapid method that can analyze large quantities of particles quickly by measuring the scattering of laser light.One of the key applications of grain size analysis (颗粒大小分析) is in the field of sedimentology. By analyzing the grain sizes of sediments, scientists can infer past environmental conditions and processes. For example, a predominance of fine-grained sediments may indicate a low-energy environment, such as a deep-water setting, whereas coarse-grained sediments suggest higher energy conditions, like those found in riverbeds or beaches. This information is invaluable for reconstructing ancient landscapes and understanding geological history.Moreover, grain size analysis (颗粒大小分析) is also essential in the field of environmental science. Contaminated soils are often analyzed to determine the distribution of pollutants and their potential mobility. The grain size can affect how contaminants are retained in the soil, influencing remediation strategies. Thus, conducting a thorough grain size analysis (颗粒大小分析) can guide environmental assessments and cleanup efforts.In conclusion, grain size analysis (颗粒大小分析) is an indispensable tool across various scientific disciplines. Its ability to elucidate the characteristics of materials and sediments makes it a fundamental aspect of research and application in geology, materials science, and environmental studies. 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 analyses. This ongoing development will undoubtedly enhance our understanding of material properties and geological processes, paving the way for innovations in engineering and environmental management.

颗粒大小分析是一种在地质学、材料科学和工程等多个领域中使用的重要技术。它指的是测量和分类给定样本中颗粒大小的过程，样本可以包括土壤、沉积物或任何颗粒状材料。颗粒大小分析的意义在于它能够提供对材料物理特性和行为的深入了解。例如，在地质学中，理解沉积岩的颗粒大小分布可以揭示沉积环境和沉积物沉积条件下的能量状况。在材料科学中，颗粒大小分析在确定金属和合金的机械性能方面起着至关重要的作用。金属结构内的颗粒大小可以影响其强度、延展性和韧性。较小的颗粒通常会导致材料更强，因为颗粒边界强化机制，而较大的颗粒可能会导致增加的延展性。因此，工程师和科学家常常进行颗粒大小分析以优化材料的特性，以适应特定应用。进行颗粒大小分析的方法可能因所研究的材料类型而异。常用的技术包括光学显微镜、扫描电子显微镜（SEM）和激光衍射。光学显微镜允许研究人员在样本中视觉评估颗粒大小，而SEM则提供更详细的高倍放大图像。另一方面，激光衍射是一种快速方法，可以通过测量激光光的散射快速分析大量颗粒。颗粒大小分析的一个关键应用是在沉积学领域。通过分析沉积物的颗粒大小，科学家可以推断过去的环境条件和过程。例如，细颗粒沉积物的占主导地位可能表明低能量环境，例如深水环境，而粗颗粒沉积物则表明较高的能量条件，如河床或海滩。这些信息对于重建古代景观和理解地质历史是非常宝贵的。此外，颗粒大小分析在环境科学领域也至关重要。受污染的土壤通常会被分析以确定污染物的分布及其潜在的流动性。颗粒大小可以影响污染物在土壤中的保留，从而影响修复策略。因此，进行彻底的颗粒大小分析可以指导环境评估和清理工作。总之，颗粒大小分析是各个科学学科中不可或缺的工具。它阐明材料和沉积物特性的能力使其成为地质学、材料科学和环境研究中研究和应用的基本方面。随着技术的进步，进行颗粒大小分析的方法不断改进，使得分析更加精确和全面。这一持续的发展无疑将增强我们对材料特性和地质过程的理解，为工程和环境管理的创新铺平道路。