low frequency

简明释义

低频率

英英释义

例句

1.The device is designed to detect low frequency 低频率 signals from deep space.

该设备旨在探测来自深空的低频率 低频率信号。

2.The radio station broadcasts on a low frequency 低频率 band, making it accessible to more listeners.

这家电台在低频率 低频率波段上广播，使更多听众能够接收。

3.In acoustics, sounds below 250 Hz are considered low frequency 低频率 sounds.

在声学中，250赫兹以下的声音被认为是低频率 低频率声音。

4.Scientists study low frequency 低频率 waves to understand geological formations.

科学家研究低频率 低频率波以了解地质构造。

5.The low frequency 低频率 response of the subwoofer enhances the overall sound experience.

低音炮的低频率 低频率响应增强了整体音效体验。

作文

In the realm of communication technology, the concept of low frequency (低频) plays a crucial role in various applications, particularly in radio broadcasting and wireless communication. The term low frequency refers to electromagnetic waves that oscillate at lower frequencies, typically ranging from 30 kHz to 300 kHz. These frequencies have unique properties that make them suitable for specific uses, such as long-distance transmission and penetration through obstacles. One of the most significant advantages of low frequency signals is their ability to travel long distances. Unlike high-frequency signals, which tend to dissipate quickly, low frequency waves can propagate over vast areas, making them ideal for AM radio stations that broadcast to wide audiences. This characteristic is especially beneficial in rural or remote areas where access to information is limited. For instance, during natural disasters, low frequency radio broadcasts can reach affected populations, providing them with critical updates and safety instructions. Moreover, low frequency signals can penetrate through physical barriers such as buildings and trees more effectively than higher frequency signals. This property allows for better reception in urban environments where tall structures may obstruct signal paths. As a result, low frequency communication systems are often employed in situations where reliable connectivity is essential, such as in emergency services and military operations. However, while low frequency has its advantages, it also comes with certain limitations. One notable drawback is the lower data transmission rates compared to higher frequency bands. In an age where high-speed internet and instant communication are paramount, the slower speeds associated with low frequency can be a significant disadvantage. Consequently, many modern communication systems favor higher frequencies for tasks that require rapid data exchange, such as streaming video or online gaming. Another challenge with low frequency signals is their susceptibility to interference from environmental factors. For example, changes in atmospheric conditions, such as humidity and temperature, can affect the propagation of low frequency waves, leading to fluctuations in signal quality. Engineers and technicians must account for these variables when designing communication systems to ensure consistent performance. Despite these challenges, the application of low frequency technology continues to evolve. Innovations in modulation techniques and signal processing have enhanced the efficiency and reliability of low frequency communications. Additionally, as the demand for Internet of Things (IoT) devices grows, there is renewed interest in utilizing low frequency bands for connecting smart devices that require low power consumption and extended range.In conclusion, the concept of low frequency is integral to understanding communication technologies. Its unique properties enable long-distance transmission and effective penetration through obstacles, making it invaluable in specific contexts. While it faces challenges such as lower data rates and environmental interference, ongoing advancements in technology promise to enhance its applications further. As we continue to innovate in the field of communication, the importance of low frequency will undoubtedly remain significant, ensuring that it retains a vital role in our increasingly connected world.

在通信技术领域，低频（low frequency）的概念在各种应用中发挥着至关重要的作用，特别是在广播和无线通信中。低频一词指的是以较低频率振荡的电磁波，通常范围在30 kHz到300 kHz之间。这些频率具有独特的特性，使其适合特定用途，如长距离传输和穿透障碍物。低频信号的一个显著优势是它们能够传播很长的距离。与高频信号相比，后者往往迅速衰减，低频波可以在广阔的区域内传播，使其成为向广大受众广播的AM电台的理想选择。这一特性在偏远或乡村地区尤其有益，因为这些地区获取信息的渠道有限。例如，在自然灾害期间，低频无线电广播可以覆盖受影响的人群，为他们提供关键的更新和安全指示。此外，低频信号比高频信号更有效地穿透建筑物和树木等物理障碍。这一特性使得在城市环境中接收信号的效果更好，因为高楼大厦可能会阻碍信号路径。因此，在需要可靠连接的情况下，低频通信系统常常被用于紧急服务和军事行动等场合。然而，虽然低频具有其优势，但也伴随着某些局限性。一项显著的缺点是与高频段相比，数据传输速率较低。在高速互联网和即时通信至关重要的时代，与低频相关的较慢速度可能是一个重大劣势。因此，许多现代通信系统更倾向于使用高频率进行需要快速数据交换的任务，例如视频流或在线游戏。另一个与低频信号相关的挑战是它们对环境因素的干扰敏感。例如，湿度和温度等气象条件的变化可能会影响低频波的传播，从而导致信号质量波动。工程师和技术人员必须在设计通信系统时考虑这些变量，以确保性能的一致性。尽管面临这些挑战，低频技术的应用仍在不断发展。调制技术和信号处理方面的创新提高了低频通信的效率和可靠性。此外，随着物联网（IoT）设备需求的增长，人们对利用低频频段连接需要低功耗和延伸范围的智能设备重新产生了兴趣。总之，低频的概念对于理解通信技术至关重要。其独特的特性使其能够实现长距离传输和有效穿透障碍物，使其在特定情境下不可或缺。尽管面临数据速率较低和环境干扰等挑战，技术的持续进步承诺进一步增强其应用。随着我们在通信领域的不断创新，低频的重要性无疑将保持显著，确保其在我们日益互联的世界中继续发挥重要作用。