Doppler count

简明释义

多普勒计数

英英释义

例句

1.The Doppler count 多普勒计数 readings were higher than normal, indicating potential health issues.

Doppler count 多普勒计数 的读数高于正常水平，表明可能存在健康问题。

2.During the ultrasound, the technician took a Doppler count 多普勒计数 to assess the fetal heart rate.

在超声检查中，技师进行了 Doppler count 多普勒计数 以评估胎儿心率。

3.Researchers used a Doppler count 多普勒计数 to study the effects of exercise on heart function.

研究人员使用 Doppler count 多普勒计数 来研究运动对心脏功能的影响。

4.The Doppler count 多普勒计数 can help identify any abnormalities in blood circulation.

Doppler count 多普勒计数 可以帮助识别血液循环中的任何异常。

5.The doctor explained that the Doppler count 多普勒计数 measures the blood flow in the patient's arteries.

医生解释说，Doppler count 多普勒计数 测量患者动脉中的血流。

作文

In the realm of physics and engineering, the term Doppler count refers to a measurement technique that utilizes the Doppler effect to determine the frequency of waves emitted by moving objects. This concept has far-reaching applications, particularly in fields such as astronomy, meteorology, and medical imaging. Understanding the Doppler count is crucial for professionals working with wave phenomena, as it provides insights into the motion and characteristics of various entities. The Doppler effect, named after the Austrian physicist Christian Doppler, describes the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source. For instance, when a vehicle approaches an observer, the sound waves compress, resulting in a higher frequency or pitch. Conversely, as the vehicle moves away, the sound waves stretch, leading to a lower frequency. This principle can be applied not only to sound waves but also to electromagnetic waves, such as light. When we talk about Doppler count, we often refer to its application in radar technology. In meteorology, Doppler radar systems are employed to measure precipitation and wind patterns. By analyzing the frequency shifts in the returned radar waves, meteorologists can determine the speed and direction of rain or storm systems. This information is vital for predicting weather conditions and issuing warnings for severe weather events. The accuracy of Doppler count in these scenarios can significantly impact public safety and preparedness. In the field of medicine, Doppler count plays a pivotal role in ultrasound imaging. Doppler ultrasound is a non-invasive method used to assess blood flow and detect abnormalities in the cardiovascular system. By measuring the frequency changes of sound waves reflected off moving blood cells, healthcare professionals can visualize blood flow in real-time. This technique is essential for diagnosing various conditions, including heart disease and vascular disorders. The ability to obtain accurate Doppler count readings can lead to timely interventions and improved patient outcomes. Astronomy also benefits from the principles of the Doppler count. Scientists use this technique to study celestial bodies and their movements. For example, by observing the light spectra from stars and galaxies, astronomers can determine whether these objects are moving towards or away from Earth. This information helps in understanding the expansion of the universe and the dynamics of cosmic structures. The Doppler count has thus become a fundamental tool in modern astrophysics, contributing to our knowledge of the universe's evolution. In conclusion, the concept of Doppler count is integral to various scientific and technological fields. Its applications range from weather forecasting and medical diagnostics to astronomical research. Mastering the principles behind Doppler count allows professionals to harness the power of wave phenomena effectively. As technology continues to advance, the relevance of Doppler count will undoubtedly grow, paving the way for innovative solutions to complex challenges in multiple disciplines.

在物理和工程领域，术语Doppler count指的是一种测量技术，该技术利用多普勒效应来确定移动物体发出的波的频率。这个概念具有广泛的应用，特别是在天文学、气象学和医学成像等领域。理解Doppler count对从事波现象工作的专业人员至关重要，因为它提供了关于各种实体的运动和特征的见解。 多普勒效应以奥地利物理学家克里斯蒂安·多普勒的名字命名，描述了波的频率或波长相对于与波源相对运动的观察者的变化。例如，当一辆车辆接近观察者时，声波会压缩，导致频率或音调升高。相反，当车辆远离时，声波会拉伸，导致频率降低。这个原理不仅可以应用于声波，还可以应用于电磁波，如光。 当我们谈论Doppler count时，我们通常指的是其在雷达技术中的应用。在气象学中，气象雷达系统用于测量降水和风模式。通过分析返回雷达波的频率变化，气象学家可以确定雨水或风暴系统的速度和方向。这些信息对于预测天气条件和发布严重天气事件的警告至关重要。在这些情况下，Doppler count的准确性可以显著影响公众安全和准备工作。 在医学领域，Doppler count在超声成像中发挥着关键作用。多普勒超声是一种无创的方法，用于评估血流并检测心血管系统的异常。通过测量反射自移动血细胞的声波的频率变化，医疗专业人员可以实时可视化血流。这项技术对于诊断各种疾病，包括心脏病和血管疾病至关重要。获得准确的Doppler count读数可以导致及时干预和改善患者结果。 天文学也受益于Doppler count的原理。科学家们利用这一技术研究天体及其运动。例如，通过观察恒星和星系的光谱，天文学家可以确定这些物体是朝向地球还是远离地球运动。这些信息有助于理解宇宙的扩张和宇宙结构的动态。因此，Doppler count已成为现代天体物理学的基本工具，为我们对宇宙演化的认识做出了贡献。 总之，Doppler count的概念对于各种科学和技术领域至关重要。它的应用范围包括天气预报、医学诊断和天文研究。掌握Doppler count背后的原理使专业人员能够有效利用波现象的力量。随着技术的不断进步，Doppler count的相关性无疑会增长，为多个学科中的复杂挑战提供创新解决方案。