very-high frequency

简明释义

甚高频

英英释义

例句

1.The military uses very-high frequency for secure communications.

军方使用超高频进行安全通信。

2.In telecommunications, very-high frequency signals are used for TV and FM radio broadcasting.

在电信中，超高频信号用于电视和调频广播。

3.The very-high frequency band is crucial for aviation communication.

对于航空通信来说，超高频频段至关重要。

4.Devices operating on very-high frequency can penetrate obstacles better than lower frequencies.

在超高频下工作的设备比低频设备更能穿透障碍物。

5.The radio station broadcasts on a very-high frequency, which allows for clearer sound quality.

这个广播电台在超高频上播出，能够提供更清晰的音质。

作文

In the realm of telecommunications, the term very-high frequency refers to a specific range of radio frequencies that are essential for various forms of communication. This frequency range typically spans from 30 MHz to 300 MHz and is widely used for television broadcasts, FM radio, and two-way radios. The significance of very-high frequency in modern communication cannot be overstated, as it plays a crucial role in ensuring clear and reliable signals over considerable distances.One of the key advantages of very-high frequency is its ability to provide better sound quality compared to lower frequencies. For instance, FM radio, which operates within this frequency range, offers superior audio clarity and less interference, making it a preferred choice for listeners. This high-quality transmission is particularly important in urban areas where multiple signals can overlap, leading to a clearer listening experience.Additionally, very-high frequency is vital for television broadcasting. Most television stations transmit their signals using VHF (Very High Frequency) channels, which allow for a more stable reception. This stability is crucial for viewers who want to enjoy uninterrupted programming, especially during live events or critical news broadcasts. The use of very-high frequency in television also enables broadcasters to reach wider audiences, as these frequencies can travel longer distances without significant degradation in quality.Moreover, the very-high frequency band is not only limited to entertainment but also extends to emergency services and public safety communications. Many police, fire, and ambulance services utilize VHF radios to coordinate their efforts during emergencies. The reliability of very-high frequency signals ensures that first responders can communicate effectively, which is vital for saving lives and managing critical situations.Despite its many benefits, the very-high frequency spectrum faces challenges. With the increasing demand for wireless communication, there is a growing concern about frequency congestion. As more devices and services compete for the same frequencies, it becomes essential to implement efficient frequency management strategies. Regulatory bodies must ensure that the very-high frequency range remains accessible for essential services while accommodating new technologies and applications.In conclusion, the role of very-high frequency in our daily lives is significant. From enhancing our listening experiences on the radio to facilitating crucial communications among emergency services, VHF frequencies are integral to modern society. As technology continues to evolve, it is imperative that we understand and appreciate the importance of very-high frequency in keeping us connected and informed. Moving forward, we must advocate for responsible usage and management of this valuable resource to ensure that it continues to serve our needs effectively.

在电信领域，短语very-high frequency指的是一种特定的无线电频率范围，这对于各种通信形式至关重要。该频率范围通常从30 MHz到300 MHz，广泛用于电视广播、调频广播和双向无线电。very-high frequency在现代通信中的重要性不容小觑，因为它在确保信号在相当距离内清晰可靠方面发挥着关键作用。very-high frequency的一个主要优点是它能够提供比低频更好的音质。例如，调频广播在这一频率范围内运行，提供卓越的音频清晰度和较少的干扰，使其成为听众的首选。这种高质量的传输在多个信号可能重叠的城市地区尤为重要，能够带来更清晰的聆听体验。此外，very-high frequency对电视广播至关重要。大多数电视台使用VHF（超高频）频道进行信号传输，这使得接收更加稳定。这种稳定性对于希望享受不中断节目播放的观众来说至关重要，尤其是在直播活动或重要新闻广播期间。电视中使用very-high frequency还使广播公司能够覆盖更广泛的观众，因为这些频率可以在没有显著质量下降的情况下传播更远的距离。而且，very-high frequency频段不仅限于娱乐，还扩展到紧急服务和公共安全通信。许多警察、消防和救护车服务利用VHF无线电在紧急情况下协调他们的工作。very-high frequency信号的可靠性确保了第一响应者能够有效沟通，这对于拯救生命和管理危急情况至关重要。尽管有许多好处，very-high frequency频谱面临挑战。随着对无线通信需求的增加，人们越来越担心频率拥堵。当越来越多的设备和服务竞争相同的频率时，实施有效的频率管理策略变得至关重要。监管机构必须确保very-high frequency范围仍然可供基本服务使用，同时适应新技术和应用。总之，very-high frequency在我们日常生活中的角色是显著的。从增强我们在收音机上的聆听体验到促进紧急服务之间的关键通信，VHF频率是现代社会不可或缺的一部分。随着技术的不断发展，我们必须理解并欣赏very-high frequency在保持我们联系和获取信息方面的重要性。展望未来，我们必须倡导负责任地使用和管理这一宝贵资源，以确保其继续有效地满足我们的需求。