derived unit

简明释义

导出单位

英英释义

例句

1.Pressure is measured in pascals, which is a derived unit 派生单位 of force per area.

压力以帕斯卡为单位测量，这是一种以面积为单位的derived unit 派生单位。

2.The liter is a derived unit 派生单位 for volume commonly used in cooking.

升是一个常用于烹饪的derived unit 派生单位，用于表示体积。

3.The joule is a derived unit 派生单位 of energy in the International System of Units.

焦耳是国际单位制中的一个derived unit 派生单位，用来表示能量。

4.In physics, a meter per second is a derived unit 派生单位 used to measure speed.

在物理学中，米每秒是一个derived unit 派生单位，用于测量速度。

5.Electricity consumption is often expressed in kilowatt-hours, which is a derived unit 派生单位 of energy.

电力消耗通常以千瓦时表示，这是一个derived unit 派生单位，用于表示能量。

作文

In the world of science and engineering, measurements play a crucial role in understanding the physical universe. One important aspect of measurement is the use of units, which can be categorized into two main types: base units and derived units. Base units are the fundamental units that define a physical quantity, such as length, mass, time, and temperature. In contrast, derived units are those that are derived from the base units through mathematical relationships. This essay will explore the significance of derived units, their applications, and how they enhance our understanding of various scientific phenomena.To begin with, derived units provide a way to express complex measurements in a more comprehensible manner. For instance, speed is a common measurement that is defined as the distance traveled over time. It is expressed in derived units such as meters per second (m/s) or kilometers per hour (km/h). Here, the derived unit of speed combines the base units of length (meters) and time (seconds) to give a clear representation of how fast an object is moving. Without derived units, we would have difficulty communicating and understanding these measurements effectively.Moreover, derived units are essential in various fields of science and technology. In physics, for example, the unit of force is the Newton (N), which is defined as the force required to accelerate a one-kilogram mass by one meter per second squared. This derived unit incorporates the base units of mass (kilograms), length (meters), and time (seconds) to create a comprehensive understanding of the concept of force. Similarly, in chemistry, the concentration of a solution is often measured in moles per liter (mol/L), another example of a derived unit that combines the concepts of amount of substance and volume.The use of derived units also facilitates international collaboration in scientific research. The International System of Units (SI) standardizes these units globally, allowing scientists from different countries to share their findings and compare results without confusion. For instance, when researchers publish their work on the acceleration due to gravity, they can universally express it in derived units like meters per second squared (m/s²). This standardization promotes consistency and accuracy in scientific communication, which is vital for the progression of knowledge.Furthermore, derived units are not limited to the natural sciences; they also play a significant role in engineering and technology. Engineers often rely on derived units to design systems and structures that meet specific performance criteria. For example, when designing a bridge, engineers must consider the load-bearing capacity, which is often expressed in terms of force per area, such as Pascals (Pa). This derived unit combines the base units of force (Newtons) and area (square meters) to ensure that the structure can safely support the intended loads.In conclusion, derived units are an integral part of scientific measurement and communication. They allow us to express complex relationships between physical quantities in a clear and concise manner. By combining base units through mathematical relationships, derived units enhance our understanding of the world around us and facilitate collaboration across various scientific disciplines. As we continue to advance in technology and research, the importance of derived units will only grow, highlighting their role in shaping our comprehension of the universe.

在科学和工程的世界中，测量在理解物理宇宙中起着至关重要的作用。测量的一个重要方面是单位的使用，这些单位可以分为两种主要类型：基本单位和导出单位。基本单位是定义物理量的基本单位，如长度、质量、时间和温度。相反，导出单位是通过数学关系从基本单位衍生出来的单位。本文将探讨导出单位的重要性、它们的应用以及它们如何增强我们对各种科学现象的理解。首先，导出单位提供了一种以更易于理解的方式表达复杂测量的方法。例如，速度是一种常见的测量，定义为单位时间内行进的距离。它以导出单位表示，如米每秒（m/s）或公里每小时（km/h）。在这里，速度的导出单位结合了长度（米）和时间（秒）的基本单位，以清晰地表示物体移动的速度。如果没有导出单位，我们将很难有效地沟通和理解这些测量。此外，导出单位在科学和技术的各个领域中都是必不可少的。例如，在物理学中，力的单位是牛顿（N），定义为使一千克质量以每秒一米的速度加速所需的力。这个导出单位结合了质量（千克）、长度（米）和时间（秒）的基本单位，以全面理解力的概念。同样，在化学中，溶液的浓度通常以摩尔每升（mol/L）来测量，这是另一个结合物质的量和体积的导出单位的例子。使用导出单位还促进了国际科学研究的合作。国际单位制（SI）在全球范围内标准化这些单位，使来自不同国家的科学家能够分享他们的发现并比较结果，而不会产生混淆。例如，当研究人员发布关于重力加速度的工作时，他们可以普遍地用导出单位如米每秒平方（m/s²）来表达。这种标准化促进了科学交流中的一致性和准确性，这对于知识的进步至关重要。此外，导出单位不仅限于自然科学；它们在工程和技术中也发挥着重要作用。工程师通常依赖导出单位来设计满足特定性能标准的系统和结构。例如，在设计桥梁时，工程师必须考虑承载能力，这通常以力每面积表示，如帕斯卡（Pa）。这个导出单位结合了力（牛顿）和面积（平方米）的基本单位，以确保结构能够安全地支持预期的负荷。总之，导出单位是科学测量和交流的重要组成部分。它们使我们能够以清晰简洁的方式表达物理量之间的复杂关系。通过通过数学关系结合基本单位，导出单位增强了我们对周围世界的理解，并促进了各个科学学科之间的合作。随着我们在技术和研究方面的不断进步，导出单位的重要性只会增加，突显出它们在塑造我们对宇宙理解中的作用。