apparent density
发音：英 [??p?r?nt ?dens?t?] ；美 [??p?r?nt ?dens?t?]
英语范文：
The apparent density of a substance is the weight of the substance per unit volume. It is a measure of how tightly packed the substance is within a container. For example, if you pour sand into a container, the apparent density of the sand will be the weight of the sand per unit volume of container.
In some cases, apparent density can be misleading. For instance, if you measure the apparent density of a liquid and it seems to be very high, it may indicate that there is a lot of air or gas trapped in the liquid. However, this does not necessarily mean that the liquid is denser than other liquids with similar viscosity and temperature.
In summary, apparent density is a measure of how tightly packed a substance is within a container, but it can be misleading in certain cases.
翻译：物质的表观密度是指单位体积的物质重量。它是衡量物质在容器的空间内紧密排列程度的指标。例如，如果把沙子倒入容器中，沙子的表观密度就是单位体积容器中沙子的重量。
在某些情况下，表观密度可能会产生误导。例如，如果测量液体的表观密度并且发现它似乎很高，这可能说明液体中存在大量被困的空气或气体。然而，这并不一定意味着这种液体的密度比具有相似粘度和温度的其他液体更密集。
总之，表观密度是衡量物质在容器空间内紧密排列程度的指标，但在某些情况下可能会产生误导。
英语作文音标和基础释义：表观密度（apparent density）是一个物理学概念，表示物质单位体积的质量。在特定的测量方法下，物质表观密度的大小反映了物质在容器中的排列紧密程度。在某些情况下，物质的表观密度可能会被误导，例如当液体看起来表观密度很高时，这可能是由于液体中存在大量气泡或气体。总的来说，表观密度是一个重要的物理概念，它可以帮助我们更好地理解物质的结构和性质。
Apparent Density: Understanding Its Importance in Materials Science
Apparent density is a term commonly used in materials science to describe the weight of a material per unit volume. It is an important parameter that helps us understand the solid's compressibility, porosity, and other properties.
In general, a material with a higher apparent density tends to be denser, or have a higher mass per unit volume. Conversely, a material with a lower apparent density is less dense and may have a higher mass per unit volume as well.
In materials science experiments, apparent density is often measured using standard methods such as weighing or volumetric analysis. The results of these measurements can provide valuable information about the material's physical properties and how they may change under different conditions.
For example, in the case of concrete, apparent density can indicate the quality of the mix and the amount of cementitious material used. A higher apparent density indicates a more dense mixture that may have better strength and durability properties. Conversely, a lower apparent density may indicate poor quality mixes or excessive water content, which can lead to problems such as cracking and shrinkage.
In summary, apparent density is an essential parameter in materials science that helps us understand the physical properties of materials. Understanding its importance and how to measure it can help us better design and optimize materials for specific applications.
apparent density
Apparent density refers to the relative density of a substance, which is the amount of substance per unit volume. It is an important parameter to measure the quality of materials, such as cement, sand, gravel, etc. Apparent density can be measured using various methods, such as pouring water or air into the material and observing the displacement of the liquid or gas.
In daily life, apparent density is widely used in various fields. For example, in construction, apparent density is used to evaluate the quality of cement and sand mixture, which determines the strength and stability of the building. In mining, apparent density is used to evaluate the quality of coal and ore, which affects the production efficiency and cost.
In addition, apparent density has a significant impact on environmental protection. For example, in the production process of cement, apparent density is closely related to energy consumption and carbon emissions. Therefore, reducing apparent density can not only improve the quality of materials but also reduce environmental pollution.
In conclusion, apparent density is an important parameter that determines the quality and environmental impact of various materials. Therefore, it is necessary to pay attention to the selection and application of materials with high apparent density, and promote the development of green and energy-saving materials.
If you want to know more about apparent density, you can refer to some relevant books or articles for more information. I hope this brief introduction can help you better understand this concept.
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