specific density

简明释义

比重

英英释义

例句

1.In engineering, knowing the specific density 比重 of materials is crucial for design.

在工程中，了解材料的specific density 比重 对设计至关重要。

2.Different substances have different specific densities 比重, which affects their applications.

不同物质具有不同的specific densities 比重，这影响了它们的应用。

3.To calculate the specific density 比重, you need the mass and volume of the object.

要计算specific density 比重，你需要物体的质量和体积。

4.The specific density 比重 of gold is much higher than that of aluminum.

黄金的specific density 比重 远高于铝的。

5.The specific density 比重 of the material determines its buoyancy in water.

材料的specific density 比重 决定了它在水中的浮力。

作文

Understanding the concept of specific density is essential in various fields such as physics, engineering, and environmental science. Specific density refers to the ratio of the density of a substance to the density of a reference substance, typically water for liquids and solids. This dimensionless quantity provides valuable insights into how a substance behaves in different environments, particularly when it comes to buoyancy and stability. For instance, when we consider the specific density of an object, we can determine whether it will float or sink when placed in water. If the specific density is less than one, the object will float; if it is greater than one, the object will sink. In practical applications, knowing the specific density of materials helps engineers select appropriate materials for construction and manufacturing. For example, in the aerospace industry, lightweight materials with low specific density are preferred to enhance fuel efficiency without compromising strength. Similarly, in the field of environmental science, understanding the specific density of pollutants can help assess their impact on aquatic ecosystems. A pollutant with a higher specific density than water may settle at the bottom of a body of water, affecting benthic organisms and disrupting the ecological balance.Moreover, the concept of specific density plays a crucial role in the field of chemistry. When conducting experiments, chemists often need to calculate the specific density of various solutions to understand their concentration and behavior in reactions. For example, a solution with a high specific density might indicate a high concentration of solute, which could influence reaction rates and outcomes. Furthermore, the specific density of gases is also important, especially in applications like meteorology and aerodynamics, where the behavior of air masses and other gases is influenced by their specific density relative to the surrounding atmosphere.In conclusion, the term specific density encompasses a vital aspect of material science and environmental studies. By grasping the significance of specific density, individuals can make informed decisions in various practical situations, from designing efficient structures to understanding environmental impacts. As we continue to explore the intricacies of our physical world, the concept of specific density serves as a foundational principle that aids in our comprehension of material properties and their interactions with one another.

理解比重的概念在物理、工程和环境科学等多个领域中至关重要。比重指的是某种物质的密度与参考物质（通常是液体和固体中的水）密度的比率。这个无量纲的量提供了关于物质在不同环境中行为的重要见解，特别是在浮力和稳定性方面。例如，当我们考虑一个物体的比重时，我们可以确定它放入水中后是浮还是沉。如果比重小于1，则物体会浮起；如果大于1，则物体会沉没。在实际应用中，了解材料的比重有助于工程师选择适合建筑和制造的材料。例如，在航空航天工业中，轻质且比重低的材料被优先选用，以提高燃油效率而不影响强度。同样，在环境科学领域，了解污染物的比重可以帮助评估其对水生生态系统的影响。具有比水高的比重的污染物可能会沉到底部，影响底栖生物并破坏生态平衡。此外，比重的概念在化学领域也发挥着重要作用。在进行实验时，化学家经常需要计算各种溶液的比重以了解它们的浓度和反应行为。例如，具有高比重的溶液可能表明溶质浓度高，这可能会影响反应速率和结果。此外，气体的比重也很重要，尤其是在气象学和空气动力学等应用中，气团和其他气体的行为受其相对于周围大气的比重影响。总之，术语比重涵盖了材料科学和环境研究的一个重要方面。通过理解比重的重要性，个人可以在各种实际情况下做出明智的决策，从设计高效的结构到理解环境影响。随着我们继续探索物理世界的复杂性，比重的概念作为一个基础原则，有助于我们理解材料特性及其相互作用。