very high frequency

简明释义

甚高频(30

英英释义

例句

1.The technician adjusted the settings to optimize the very high frequency 超高频 signals for the new equipment.

技术员调整了设置，以优化新设备的超高频 very high frequency 信号。

2.The radio station operates on a very high frequency 超高频 band, allowing for clearer sound transmission.

这家广播电台在超高频 very high frequency 波段上运行，允许更清晰的声音传输。

3.In television broadcasting, channels in the very high frequency 超高频 range offer better reception than lower frequencies.

在电视广播中，超高频 very high frequency 范围内的频道提供比低频率更好的接收效果。

4.Military communications often use very high frequency 超高频 to ensure secure and reliable connections.

军事通信通常使用超高频 very high frequency 以确保安全和可靠的连接。

5.Some aviation communication systems rely on very high frequency 超高频 for air traffic control.

一些航空通信系统依赖于超高频 very high frequency 来进行空中交通控制。

作文

In the realm of telecommunications, the term very high frequency refers to a specific range of radio frequencies that span from 30 MHz to 300 MHz. This range plays a crucial role in various forms of communication, including television broadcasts, FM radio, and even mobile communications. Understanding the significance of very high frequency is essential for anyone interested in the field of electronics or telecommunications.The very high frequency band is particularly known for its ability to transmit signals over long distances with relatively low interference. This characteristic makes it ideal for broadcasting purposes. For instance, FM radio stations typically operate within this frequency range, allowing them to deliver clear audio signals to listeners across vast areas. The clarity and quality of sound produced by FM radio are largely attributed to the properties of very high frequency waves, which can effectively bypass obstacles such as buildings and trees, resulting in fewer disruptions during transmission.Moreover, television signals also utilize the very high frequency spectrum. In many countries, channels 2 through 13 fall within this range, enabling the broadcast of both analog and digital television content. The shift from analog to digital broadcasting has further enhanced the capabilities of very high frequency signals, allowing for higher quality video and audio, as well as additional channels and services for viewers.In addition to broadcasting, very high frequency is essential for various communication services, including two-way radios and emergency services. Many police and fire departments use VHF radios to communicate during emergencies, ensuring that they can coordinate their efforts effectively. The reliability of very high frequency signals in urban environments, where obstructions may interfere with other frequencies, makes them an invaluable tool for first responders.Furthermore, the very high frequency range is also utilized in aviation communication. Pilots and air traffic controllers rely on VHF radio for clear communication during flights. This is critical for maintaining safety in the skies, as pilots need to receive real-time instructions and updates from air traffic control. The use of very high frequency in aviation underscores its importance in ensuring not only effective communication but also the safety of passengers and crew.Despite its advantages, the very high frequency band is not without limitations. For example, VHF signals tend to have a shorter range compared to lower frequencies, particularly in densely populated areas. This can necessitate the use of repeaters or additional infrastructure to ensure comprehensive coverage. Additionally, while very high frequency signals can penetrate obstacles better than higher frequencies, they are still subject to some level of attenuation, particularly in adverse weather conditions.In conclusion, the concept of very high frequency is integral to modern communication systems, influencing everything from entertainment to emergency services. Its unique properties allow for efficient transmission of signals, making it a preferred choice for various applications. As technology continues to evolve, the relevance of very high frequency will undoubtedly persist, adapting to meet the growing demands of society. Therefore, understanding the implications and applications of very high frequency is essential for anyone looking to engage with the telecommunications industry or simply seeking to understand the world around them better.

在电信领域，术语很高频指的是一个特定的无线电频率范围，从30 MHz到300 MHz。这一范围在各种通信形式中发挥着至关重要的作用，包括电视广播、FM广播甚至移动通信。理解很高频的重要性对于任何对电子或电信领域感兴趣的人来说都是必不可少的。很高频频段以其能够以相对较低的干扰传输信号而闻名。这一特性使其在广播方面非常理想。例如，FM广播电台通常在这一频率范围内运行，使它们能够将清晰的音频信号传递给广大听众。FM广播所产生的音质和清晰度在很大程度上归功于很高频波的特性，这些波能够有效地绕过建筑物和树木等障碍，从而在传输过程中减少干扰。此外，电视信号也利用很高频频谱。在许多国家，频道2到13都属于这一范围，使得模拟和数字电视内容的广播成为可能。从模拟广播到数字广播的转变进一步增强了很高频信号的能力，允许更高质量的视频和音频，以及为观众提供额外的频道和服务。除了广播之外，很高频对各种通信服务也至关重要，包括双向无线电和紧急服务。许多警察和消防部门使用VHF无线电在紧急情况下进行通信，确保他们能够有效协调工作。很高频信号在城市环境中的可靠性，使其成为第一响应者的宝贵工具，因为在这些环境中，其他频率可能受到干扰。此外，很高频范围在航空通信中也被广泛使用。飞行员和空中交通管制员依赖VHF无线电在飞行期间进行清晰的沟通。这对于维护空中安全至关重要，因为飞行员需要实时接收来自空中交通管制的指令和更新。很高频在航空中的使用强调了其在确保有效沟通和乘客及机组人员安全方面的重要性。尽管有其优势，很高频频段并非没有局限性。例如，与较低频率相比，VHF信号在覆盖范围上往往较短，特别是在密集的人口区域。这可能需要使用中继器或额外的基础设施，以确保全面覆盖。此外，虽然很高频信号在穿透障碍方面优于更高频率，但它们仍然会受到一定程度的衰减，尤其是在恶劣天气条件下。总之，很高频的概念对于现代通信系统至关重要，影响着从娱乐到紧急服务的方方面面。其独特的特性允许有效的信号传输，使其成为各种应用的首选。因此，理解很高频的含义和应用对于任何希望参与电信行业或简单想更好地理解周围世界的人来说都是必不可少的。