bulk density

简明释义

体积比重

英英释义

例句

1.A lower bulk density in compost indicates a higher amount of air space, which is beneficial for microbial activity.

堆肥中较低的体积密度表示空气空间较多，这对微生物活动是有益的。

2.Engineers often measure the bulk density of aggregates to ensure proper concrete mix design.

工程师通常测量骨料的体积密度以确保混凝土配合比设计的正确性。

3.The bulk density of the powder affects its flow characteristics and packing efficiency.

粉末的体积密度会影响其流动特性和包装效率。

4.The soil's bulk density is crucial for determining its porosity and water retention capacity.

土壤的体积密度对确定其孔隙率和水分保持能力至关重要。

5.In construction, knowing the bulk density of materials helps in calculating load-bearing capacities.

在建筑中，了解材料的体积密度有助于计算承载能力。

作文

Understanding the concept of bulk density is essential in various fields, including agriculture, construction, and environmental science. Bulk density refers to the mass of a substance divided by its volume, including the spaces between particles. This measurement is crucial for determining how much material can fit into a given space, which directly affects many practical applications.In agriculture, for instance, bulk density plays a significant role in soil health and crop production. Soils with high bulk density may indicate compaction, which can hinder root growth and water infiltration. When soil is compacted, it becomes denser, reducing the pore spaces that allow air and water to move through. This can lead to poor drainage and increased runoff, ultimately affecting plant health and yield. Farmers often measure bulk density to assess soil condition and make informed decisions about tillage practices and soil amendments.In the construction industry, understanding bulk density is vital for material selection and structural integrity. Different materials have varying bulk densities, which affects their weight and how they will perform under load. For example, concrete has a higher bulk density than wood, making it suitable for foundations and load-bearing structures. Engineers must calculate the bulk density of materials to ensure that buildings are safe and stable. Additionally, when dealing with waste management, knowing the bulk density of different materials helps in planning for transportation and disposal, as denser materials may require different handling techniques compared to lighter ones.Environmental scientists also utilize bulk density measurements to assess contamination levels in soils and sediments. By understanding the bulk density of a contaminated site, scientists can estimate the volume of pollutants present and determine the best remediation strategies. For example, if a site has a high bulk density, it may indicate that contaminants are concentrated in a smaller volume of soil, necessitating targeted cleanup efforts.Moreover, bulk density is important in the field of material science. It helps in characterizing materials and predicting their behavior under various conditions. For instance, powders used in pharmaceuticals must have specific bulk densities to ensure proper dosing and efficacy. Similarly, in the manufacturing of ceramics, the bulk density of raw materials can influence the final product's strength and durability.In conclusion, the concept of bulk density is multifaceted and applies to numerous disciplines. Its implications range from agricultural productivity and construction safety to environmental protection and material science. Understanding bulk density allows professionals in these fields to make informed decisions, optimize processes, and enhance outcomes. As we continue to face challenges related to food security, sustainable construction, and environmental degradation, the significance of bulk density will only grow, highlighting the need for ongoing research and education in this area.

理解散装密度的概念在农业、建筑和环境科学等多个领域中至关重要。散装密度是指物质的质量除以其体积，包括粒子之间的空间。这一测量对于确定在给定空间内可以容纳多少材料至关重要，这直接影响许多实际应用。例如，在农业中，散装密度在土壤健康和作物生产中起着重要作用。高散装密度的土壤可能表明压实，这会阻碍根系生长和水分渗透。当土壤被压实时，它变得更加密集，减少了允许空气和水通过的孔隙。这可能导致排水不良和径流增加，最终影响植物健康和产量。农民通常测量散装密度来评估土壤状况，从而做出关于耕作方法和土壤改良剂的明智决策。在建筑行业，了解散装密度对于材料选择和结构完整性至关重要。不同材料具有不同的散装密度，这会影响它们的重量以及在负载下的表现。例如，混凝土的散装密度高于木材，使其适合用于基础和承重结构。工程师必须计算材料的散装密度以确保建筑物的安全和稳定。此外，在处理废物管理时，了解不同材料的散装密度有助于规划运输和处置，因为较密集的材料可能需要与较轻材料不同的处理技术。环境科学家还利用散装密度测量来评估土壤和沉积物中的污染水平。通过了解受污染地点的散装密度，科学家可以估算存在的污染物体积，并确定最佳修复策略。例如，如果一个地点的散装密度很高，这可能表明污染物集中在较小的土壤体积中，需要针对性的清理工作。此外，散装密度在材料科学领域也很重要。它有助于表征材料并预测其在各种条件下的行为。例如，用于制药的粉末必须具有特定的散装密度以确保适当的剂量和疗效。同样，在陶瓷制造中，原材料的散装密度会影响最终产品的强度和耐用性。总之，散装密度的概念是多方面的，适用于多个学科。它的影响范围从农业生产力和建筑安全到环境保护和材料科学。理解散装密度使这些领域的专业人士能够做出明智的决策，优化流程，提高结果。随着我们继续面临与粮食安全、可持续建筑和环境退化相关的挑战，散装密度的重要性只会增加，突显出在这一领域持续研究和教育的必要性。