pulsating quantity

简明释义

脉动量

英英释义

例句

1.In physics, a sound wave is a pulsating quantity that varies with time and can be measured in decibels.

在物理学中，声波是一种随时间变化的脉动量，可以用分贝来测量。

2.Engine performance can be analyzed by monitoring the pulsating quantity of fuel injection.

通过监测燃油喷射的脉动量可以分析发动机性能。

3.In medical imaging, the pulsating quantity of blood flow is crucial for diagnosing conditions.

在医学成像中，血流的脉动量对诊断病症至关重要。

4.The pulsating quantity of light emitted by the star changes as it moves through space.

星星发出的光的脉动量随着它在空间中的移动而变化。

5.The heart's rhythm can be described as a pulsating quantity, reflecting the blood flow in the body.

心脏的节奏可以被描述为一种脉动量，反映了身体内的血流。

作文

In the world of physics and engineering, the concept of a pulsating quantity plays a vital role in understanding various phenomena. A pulsating quantity refers to a variable that changes periodically over time, often characterized by oscillations or fluctuations. This concept can be observed in numerous applications, from sound waves to electrical currents. By studying pulsating quantities, scientists and engineers can better predict behaviors and design systems that effectively harness these dynamic properties.One of the most common examples of a pulsating quantity is sound waves. When we speak, our vocal cords vibrate, creating sound waves that travel through the air. These sound waves are essentially pulsating quantities because they have varying pressure levels that change rapidly, producing different pitches and volumes. Understanding the nature of these pulsating quantities allows audio engineers to manipulate sound for music production, telecommunications, and other applications.Another significant area where pulsating quantities are crucial is in electrical engineering. Alternating current (AC) is a prime example of a pulsating quantity. Unlike direct current (DC), which flows steadily in one direction, AC changes its direction and magnitude periodically. This fluctuation can be represented mathematically as a sinusoidal wave, indicating how voltage and current vary over time. Engineers utilize this understanding to design circuits that efficiently use AC power, which is essential for powering homes and industries.In addition to sound waves and electrical currents, pulsating quantities can also be found in mechanical systems. For instance, the motion of a pendulum is a classic example of a pulsating quantity. As the pendulum swings back and forth, its position and velocity change in a periodic manner. This behavior is not only fascinating from a theoretical standpoint but also has practical implications in the design of clocks and timing mechanisms.The study of pulsating quantities extends beyond basic science and engineering; it also has applications in fields such as biology and economics. In biology, heartbeats can be considered pulsating quantities as they represent the rhythmic contractions of the heart muscle. Monitoring these rhythms can provide valuable insights into a person's health and help detect potential medical issues.In economics, certain market trends can exhibit pulsating quantities as well. Stock prices may fluctuate over time, reflecting the changing dynamics of supply and demand. By analyzing these pulsating quantities, economists can make predictions about future market behavior and guide investment strategies.In conclusion, the concept of a pulsating quantity is essential across various disciplines. Whether in physics, engineering, biology, or economics, understanding how these quantities behave allows us to innovate and improve systems that impact our daily lives. As technology continues to advance, the ability to analyze and manipulate pulsating quantities will remain a critical skill for future generations of scientists and engineers. The study of these dynamic variables not only enhances our comprehension of the natural world but also drives progress in numerous fields, making it a cornerstone of scientific inquiry.

在物理和工程的世界中，脉动量的概念在理解各种现象方面发挥着至关重要的作用。脉动量是指随时间周期性变化的变量，通常以振荡或波动为特征。这个概念可以在许多应用中观察到，从声波到电流。通过研究脉动量，科学家和工程师能够更好地预测行为并设计有效利用这些动态特性的系统。最常见的脉动量实例之一是声波。当我们说话时，声带振动，产生穿过空气传播的声波。这些声波本质上是脉动量，因为它们的压力水平快速变化，产生不同的音调和音量。理解这些脉动量的性质使音频工程师能够操控声音，以便于音乐制作、电信和其他应用。另一个脉动量至关重要的领域是电气工程。交流电（AC）就是一个典型的脉动量示例。与单向流动的直流电（DC）不同，交流电周期性地改变其方向和幅度。这种波动可以用数学方式表示为正弦波，表明电压和电流随时间的变化。工程师利用这种理解设计电路，以高效地使用交流电，这对为家庭和工业供电至关重要。除了声波和电流，机械系统中也可以找到脉动量的存在。例如，摆的运动就是一个经典的脉动量实例。当摆动来回摆动时，其位置和速度以周期性方式变化。这种行为不仅从理论角度来看令人着迷，而且在钟表和计时机制的设计中具有实际意义。对于脉动量的研究超越了基础科学和工程，它在生物学和经济学等领域也有应用。在生物学中，心跳可以视为脉动量，因为它代表心肌的节律性收缩。监测这些节奏可以提供有关一个人健康的重要见解，并帮助发现潜在的医疗问题。在经济学中，某些市场趋势也可能表现出脉动量。股价可能随时间波动，反映供需动态的变化。通过分析这些脉动量，经济学家可以对未来市场行为做出预测，并指导投资策略。总之，脉动量的概念在各个学科中都是至关重要的。无论是在物理、工程、生物学还是经济学，理解这些数量的行为使我们能够创新和改善影响日常生活的系统。随着技术的不断进步，分析和操控脉动量的能力将继续成为未来科学家和工程师的一项关键技能。这些动态变量的研究不仅增强了我们对自然世界的理解，而且推动了多个领域的进步，使其成为科学探究的基石。