bulk density

bulk density的音标为["bʌlk dəˈresɪs]，基本翻译为“散体密度”，速记技巧为“保密度（bulk density）=保密度（density）”。

bulk density的英文词源是：

bulk density来源于拉丁语“bulga”，意为“块”或“团”。这个词后来被引入英语，并演变为“bulk”，意为“体积”。density则来源于拉丁语“densitas”，意为“密度”。因此，“bulk density”可以理解为物体在单位体积下的密度，即物体在体积块时的密度。

变化形式：

1. 形容词形式为“bulky”，意为体积大的，可扩展的。

2. 副词形式为“bulkily”，意为扩展地，大量地。

相关单词：

1. bulkhead - 船舱隔板，用于分隔货舱。

2. bulk carrier - 散装货物运输船，用于运输大量散装货物。

3. bulk freight - 散装货物运费，通常指运输大量散装货物所需的费用。

4. bulk density test - 散装密度测试，用于测量散装货物的密度。

5. bulk handling - 散装处理，指处理大量散装货物的过程。

6. bulk storage - 散装储存，指储存大量散装货物的设施。

7. bulk plant - 散装植物，指用于处理大量散装植物物质的设备。

8. bulk density meter - 散装密度计，用于测量散装物料的密度。

9. bulk density coefficient - 散装密度系数，用于描述散装物料在特定条件下的密度与体积的关系。

10. bulk density tester - 散装密度测试仪，用于测量散装物料的实际密度。

常用短语：

1. bulk density of soil

2. bulk density of concrete

3. bulk density of sand

4. bulk density of gravel

5. bulk density of aggregate

6. bulk density of cement

7. bulk density of cement paste

双语例句：

1. The bulk density of the soil sample is 1.3 g/cm³.

2. The bulk density of the concrete is 2.5 g/cm³, which is higher than the standard value.

3. The bulk density of the sand is 1.6 g/cm³, which is suitable for the construction project.

4. The bulk density of the gravel is 2.0 g/cm³, which is suitable for road construction.

5. The bulk density of the aggregate is 3.5 g/cm³, which ensures good strength and durability of the concrete structure.

6. The bulk density of cement paste is 1.5 g/cm³, which ensures good workability and strength of the cementitious material.

英文小作文：

Bulk Density of Materials

Bulk density is an important parameter for evaluating the quality and performance of various materials, including soil, concrete, sand, gravel, aggregate, cement, and cement paste. For example, the bulk density of soil determines its water retention capacity and permeability, while the bulk density of concrete affects its strength and durability. Similarly, the bulk density of sand determines its suitability for construction projects, while the bulk density of gravel determines its suitability for road construction. Therefore, it is crucial to measure the bulk density of materials accurately and comprehensively to ensure their quality and performance meet the requirements of different applications.