apparent density

简明释义

表观密度

英英释义

例句

1.In order to calculate the apparent density, we need to measure both the mass and the volume of the sample.

为了计算表观密度，我们需要测量样品的质量和体积。

2.To improve insulation properties, materials with a low apparent density are often used.

为了改善绝缘性能，通常使用表观密度较低的材料。

3.Researchers found that the apparent density of the newly developed polymer was lower than expected.

研究人员发现新开发的聚合物的表观密度低于预期。

4.The apparent density of the material is crucial for determining its suitability in construction projects.

材料的表观密度对于确定其在建筑项目中的适用性至关重要。

5.The apparent density of the powder affects its flowability and compaction during processing.

粉末的表观密度影响其在加工过程中的流动性和压实性。

作文

Understanding the concept of apparent density is vital in various scientific and engineering fields. Apparent density refers to the mass of a material per unit volume, including the spaces between particles. This property is essential when evaluating materials for construction, manufacturing, and even food production, as it affects the overall performance and usability of the material. For instance, in the construction industry, knowing the apparent density of concrete can help engineers determine its strength and suitability for specific applications.When discussing apparent density, it is crucial to differentiate it from true density. True density measures only the mass of the solid material without considering any voids or pores. In contrast, apparent density encompasses the entire volume, making it a more practical measurement in many cases. For example, a porous material like pumice may have a low true density but a higher apparent density due to the air-filled spaces within its structure. This distinction is important for industries that rely on precise material properties to ensure safety and functionality.In the field of pharmaceuticals, the apparent density of powders can significantly influence the formulation of medications. A powder with a high apparent density may flow differently than one with a lower density, affecting how the drug is mixed and ultimately how well it performs in the body. Understanding these properties allows for better control over the manufacturing process, ensuring that patients receive consistent and effective doses.Moreover, researchers often utilize apparent density in environmental studies. For instance, soil scientists measure the apparent density of soil samples to assess compaction and porosity, which are critical factors affecting water retention and root growth in plants. By analyzing the apparent density, scientists can make informed decisions about land use and agricultural practices, promoting sustainable development.In conclusion, the significance of apparent density cannot be overstated. It plays a crucial role in various fields, influencing material selection, product formulation, and environmental management. By understanding this concept, professionals can make informed choices that enhance the quality and effectiveness of their work. As we continue to explore new materials and technologies, the importance of accurately measuring and interpreting apparent density will only grow, underscoring the need for education and research in this area.

理解表观密度的概念在各种科学和工程领域中至关重要。表观密度指的是材料每单位体积的质量，包括颗粒之间的空隙。这一特性在评估建筑、制造甚至食品生产材料时非常重要，因为它影响材料的整体性能和可用性。例如，在建筑行业，了解混凝土的表观密度可以帮助工程师确定其强度和特定应用的适用性。在讨论表观密度时，区分它与真实密度是至关重要的。真实密度仅测量固体材料的质量，而不考虑任何空隙或孔隙。相比之下，表观密度涵盖了整个体积，使其在许多情况下成为更实用的测量。例如，像浮石这样的多孔材料可能具有较低的真实密度，但由于其结构内充满空气的空间而具有较高的表观密度。这种区别对依赖精确材料属性以确保安全和功能性的行业来说非常重要。在制药领域，粉末的表观密度会显著影响药物的配方。具有高表观密度的粉末可能与低密度的粉末流动方式不同，影响药物的混合方式以及最终在体内的表现。理解这些特性使得制造过程能够更好地控制，确保患者获得一致且有效的剂量。此外，研究人员在环境研究中也常常利用表观密度。例如，土壤科学家测量土壤样本的表观密度以评估压实度和孔隙度，这些都是影响植物水分保持和根系生长的关键因素。通过分析表观密度，科学家可以就土地使用和农业实践做出明智的决定，促进可持续发展。总之，表观密度的重要性不容小觑。它在多个领域中发挥着关键作用，影响材料选择、产品配方和环境管理。通过理解这一概念，专业人士可以做出明智的选择，提高他们工作的质量和有效性。随着我们继续探索新材料和新技术，准确测量和解释表观密度的重要性只会增加，强调了在这一领域进行教育和研究的必要性。