specific gravity

简明释义

比重

英英释义

例句

1.A specific gravity test can help assess the quality of a liquid sample.

一个比重测试可以帮助评估液体样本的质量。

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 water is 1.0, which means it is the standard for measuring density.

水的比重是1.0，这意味着它是测量密度的标准。

4.To determine if the substance will float, you can compare its specific gravity to that of water.

要判断某种物质是否会浮起来，你可以将其比重与水的进行比较。

5.The specific gravity of gold is much higher than that of most other metals.

黄金的比重远高于大多数其他金属。

作文

Understanding the concept of specific gravity is essential in various fields, including physics, engineering, and even everyday life. Specific gravity is defined as the ratio of the density of a substance to the density of a reference substance, typically water, at a specified temperature. This measurement is dimensionless, meaning it has no units, which makes it a useful comparison tool across different materials.In practical terms, specific gravity helps us determine whether an object will float or sink when placed in water. For instance, if a substance has a specific gravity less than 1, it will float, while a substance with a specific gravity greater than 1 will sink. This principle is crucial for applications such as shipbuilding, where understanding the buoyancy of materials can lead to safer and more efficient designs.Moreover, the specific gravity of liquids can also be important in industries like oil and gas. Different types of oil have varying specific gravities, which can affect how they are extracted and processed. For example, lighter oils with lower specific gravities tend to float on water, making them easier to recover in case of spills. Understanding the specific gravity of these substances can help engineers design better containment and recovery systems.In the field of geology, specific gravity is used to identify minerals. Each mineral has a characteristic specific gravity that can aid geologists in classification and identification. By measuring the specific gravity of a mineral sample, geologists can narrow down the possibilities and make more accurate assessments about its composition and origin.Additionally, specific gravity plays a role in the medical field, particularly in urinalysis. The specific gravity of urine can provide valuable information about a person's hydration status and kidney function. A higher specific gravity may indicate dehydration, while a lower value could suggest overhydration or potential kidney issues. Doctors often use this simple measurement as part of a broader diagnostic process.In conclusion, the concept of specific gravity is not only a fundamental scientific principle but also a practical tool that spans various industries and applications. Whether it is determining the buoyancy of an object, aiding in mineral identification, or analyzing bodily fluids, understanding specific gravity enhances our ability to make informed decisions based on the properties of different materials. As we continue to explore and innovate in science and technology, the significance of specific gravity will undoubtedly remain a relevant topic across multiple disciplines.

理解比重的概念在物理学、工程学甚至日常生活中都是至关重要的。比重被定义为某种物质的密度与参考物质（通常是水）在特定温度下的密度之比。这个测量是无量纲的，意味着它没有单位，这使得它成为不同材料之间的有用比较工具。在实际应用中，比重帮助我们确定物体放入水中时是浮还是沉。例如，如果一种物质的比重小于1，它将浮在水面上，而比重大于1的物质则会沉入水中。这一原理对于船舶建造等应用至关重要，了解材料的浮力可以导致更安全、更高效的设计。此外，液体的比重在石油和天然气等行业也很重要。不同类型的石油具有不同的比重，这可能影响它们的提取和加工。例如，轻质石油的比重较低，往往会漂浮在水面上，使其在泄漏时更容易回收。了解这些物质的比重可以帮助工程师设计更好的围堵和回收系统。在地质学领域，比重用于识别矿物。每种矿物都有一个特征性的比重，这可以帮助地质学家进行分类和识别。通过测量矿物样本的比重，地质学家可以缩小可能性，从而更准确地评估其成分和来源。此外，比重在医学领域也发挥着作用，特别是在尿液分析中。尿液的比重可以提供有关一个人水合状态和肾功能的宝贵信息。较高的比重可能表明脱水，而较低的值则可能表明过度水合或潜在的肾脏问题。医生通常将这一简单的测量作为更广泛诊断过程的一部分。总之，比重的概念不仅是一个基本的科学原理，也是一个跨越多个行业和应用的实用工具。无论是确定物体的浮力、辅助矿物识别，还是分析体液，理解比重增强了我们根据不同材料的属性做出明智决策的能力。随着我们在科学和技术领域的不断探索和创新，比重的重要性无疑将在多个学科中保持相关。