specific weight

简明释义

特殊权数

英英释义

例句

1.When designing a boat, knowing the specific weight of the materials used is essential.

在设计船只时，了解所用材料的比重是必不可少的。

2.The engineer calculated the specific weight of the material to ensure it met safety standards.

工程师计算了材料的比重以确保其符合安全标准。

3.To understand the properties of the substance, we need to measure its specific weight accurately.

为了了解物质的性质，我们需要准确测量其比重。

4.In fluid mechanics, the specific weight of a liquid is crucial for determining buoyancy.

在流体力学中，液体的比重对于确定浮力至关重要。

5.The specific weight of concrete is typically around 24 kN/m³.

混凝土的比重通常约为24 kN/m³。

作文

Understanding the concept of specific weight is crucial in various fields such as physics, engineering, and even everyday life. The term specific weight refers to the weight of a substance per unit volume, typically expressed in units like newtons per cubic meter (N/m³) or pounds per cubic foot (lb/ft³). This concept is essential when dealing with fluids, as it helps in understanding buoyancy, pressure, and stability. For instance, when designing a ship, engineers must consider the specific weight of water to ensure that the vessel can float without sinking. In fluid mechanics, the specific weight plays a vital role in determining how an object interacts with the fluid around it. An object with a specific weight less than that of the fluid will float, while one with a greater specific weight will sink. This principle is not only applicable to large structures but also to small objects, making it a fundamental concept in both theoretical and practical applications.Moreover, the specific weight can change with temperature and pressure, especially for gases. This variability is significant in meteorology and aviation, where understanding air density and its specific weight can affect flight performance and weather predictions. For example, hot air rises because it has a lower specific weight compared to cooler air. This phenomenon is a critical factor in weather patterns and the formation of clouds.In the context of construction, knowing the specific weight of materials is essential for ensuring structural integrity. Engineers must calculate the load that a building can support based on the specific weight of the materials used. If the specific weight of concrete, steel, or wood is not accurately accounted for, it could lead to catastrophic failures. Thus, the specific weight is a key parameter in civil engineering and architecture.Furthermore, the specific weight is also relevant in environmental science, particularly in the study of soil and sediment. The specific weight of soil affects its compaction, permeability, and stability, which are critical factors in agriculture and land development. Understanding the specific weight of different soil types can help farmers make informed decisions about crop selection and irrigation practices.In conclusion, the concept of specific weight is not just a theoretical idea but a practical tool that applies across various disciplines. From engineering to environmental science, understanding how specific weight influences the behavior of materials and fluids is essential for making informed decisions. Whether you are designing a bridge, predicting the weather, or cultivating crops, the specific weight is a fundamental property that cannot be overlooked. By grasping the importance of specific weight, we can better appreciate the intricate relationships between different physical substances and their environments.

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。术语比重是指每单位体积的物质重量，通常以牛顿每立方米（N/m³）或磅每立方英尺（lb/ft³）等单位表示。这个概念在处理流体时至关重要，因为它有助于理解浮力、压力和稳定性。例如，在设计船只时，工程师必须考虑水的比重以确保船只能够漂浮而不下沉。在流体力学中，比重在确定物体与周围流体的相互作用中发挥着重要作用。一个比重小于流体的物体会漂浮，而一个比重大于流体的物体则会下沉。这个原理不仅适用于大型结构，也适用于小物体，使其成为理论和实际应用中的基本概念。此外，比重可以随温度和压力变化而变化，尤其是对于气体。这种变化在气象学和航空领域尤为重要，因为了解空气密度及其比重可以影响飞行性能和天气预测。例如，热空气上升是因为它的比重低于冷空气。这一现象是天气模式和云层形成的关键因素。在建筑领域，了解材料的比重对于确保结构完整性至关重要。工程师必须根据所用材料的比重计算建筑能够承受的负载。如果没有准确考虑混凝土、钢材或木材的比重，可能会导致灾难性的失败。因此，比重是土木工程和建筑学中的关键参数。此外，比重在环境科学中也相关，特别是在土壤和沉积物研究中。土壤的比重影响其压实性、渗透性和稳定性，这些都是农业和土地开发的关键因素。了解不同土壤类型的比重可以帮助农民做出有关作物选择和灌溉实践的明智决策。总之，比重的概念不仅仅是一个理论思想，而是一个适用于各个学科的实用工具。从工程到环境科学，理解比重如何影响材料和流体的行为对于做出明智的决策至关重要。无论你是在设计桥梁、预测天气还是种植作物，比重都是一个不可忽视的基本属性。通过掌握比重的重要性，我们可以更好地欣赏不同物质与其环境之间复杂的关系。