specific gravity

简明释义

比重

英英释义

例句

1.To determine if the oil will float on water, we need to know its specific gravity.

要确定油是否会漂浮在水面上，我们需要知道它的比重。

2.In geology, the specific gravity of minerals helps identify them.

在地质学中，矿物的比重有助于识别它们。

3.The specific gravity of a substance can be calculated by dividing its density by the density of water.

物质的比重可以通过将其密度除以水的密度来计算。

4.The specific gravity of water is 1, which means it is used as a reference for other substances.

水的比重是1，这意味着它被用作其他物质的参考。

5.A specific gravity greater than 1 indicates that the substance will sink in water.

大于1的比重表示该物质会在水中沉没。

作文

Understanding the concept of specific gravity is essential in various fields, including physics, engineering, and chemistry. Specific gravity is defined as the ratio of the density of a substance to the density of a reference substance, typically water for liquids and solids. This measurement is dimensionless, meaning it has no units, which allows for easier comparison between different materials. For instance, if a substance has a specific gravity of 2.5, it means that it is 2.5 times denser than water. When we explore the practical applications of specific gravity, we find that it plays a crucial role in determining whether an object will float or sink in a fluid. Objects with a specific gravity less than one will float on water, while those with a specific gravity greater than one will sink. This principle is not only important in everyday life, such as when considering the buoyancy of boats and ships, but it also has significant implications in industries like mining and material science.In the field of geology, for example, the specific gravity of minerals can help identify them. Each mineral has a characteristic specific gravity that can be measured and compared to known values. This method is particularly useful in mineral exploration and extraction, where knowing the properties of the material can lead to more efficient mining practices.Moreover, in the medical field, specific gravity is used in urinalysis to assess a patient’s hydration status and kidney function. A urine sample's specific gravity can indicate whether a person is well-hydrated or dehydrated. This simple yet effective measurement provides valuable insights into a patient’s overall health.Additionally, the specific gravity of liquids is crucial in the beverage industry, particularly in brewing and winemaking. It helps determine the sugar content of the liquid before fermentation. By measuring the specific gravity before and after fermentation, producers can calculate the alcohol content of the final product. This information is vital for quality control and ensuring that the beverages meet regulatory standards.In conclusion, the concept of specific gravity is not just an academic notion; it has practical applications that impact various industries and aspects of daily life. Understanding and measuring specific gravity allows scientists, engineers, and health professionals to make informed decisions based on the properties of materials and substances. As we continue to explore and innovate in our respective fields, the importance of specific gravity will undoubtedly remain relevant.

理解比重的概念在物理、工程和化学等多个领域中至关重要。比重定义为某种物质的密度与参考物质（通常是液体和固体的水）的密度之比。这个测量是无量纲的，意味着它没有单位，这使得不同材料之间的比较更为简单。例如，如果一种物质的比重为2.5，则表示它的密度是水的2.5倍。当我们探索比重的实际应用时，会发现它在确定物体是否会在流体中浮起或下沉方面起着关键作用。比重小于1的物体将漂浮在水面上，而比重大于1的物体则会下沉。这个原理不仅在日常生活中重要，例如考虑船只和船舶的浮力，而且在矿业和材料科学等行业中也具有重大意义。例如，在地质学领域，矿物的比重可以帮助识别它们。每种矿物都有一个特征性的比重，可以进行测量并与已知值进行比较。这种方法在矿物勘探和开采中尤其有用，了解材料的性质可以提高采矿的效率。此外，在医疗领域，比重用于尿液分析，以评估患者的水分状态和肾功能。尿样的比重可以指示一个人是否水分充足或脱水。这一简单而有效的测量提供了关于患者整体健康的宝贵见解。另外，液体的比重在饮料行业中也至关重要，特别是在酿造和酿酒过程中。它有助于确定液体在发酵前的糖分含量。通过测量发酵前后的比重，生产者可以计算最终产品的酒精含量。这些信息对于质量控制和确保饮料符合监管标准至关重要。总之，比重的概念不仅仅是一个学术概念；它具有影响各个行业和日常生活各个方面的实际应用。理解和测量比重使科学家、工程师和卫生专业人员能够基于材料和物质的性质做出明智的决策。随着我们在各自领域的不断探索和创新，比重的重要性无疑将继续保持相关性。