medium frequency band

简明释义

中频频带

英英释义

例句

1.The medium frequency band (中频段) can propagate over long distances, especially at night.

在夜间，中频段（medium frequency band）的传播距离可以很远。

2.The medium frequency band (中频段) is ideal for long-distance communication.

在中频段（medium frequency band）进行远程通信是理想的选择。

3.In some countries, the medium frequency band (中频段) is reserved for maritime communication.

在一些国家，中频段（medium frequency band）被保留用于海事通信。

4.Many AM radios tune into the medium frequency band (中频段) for news broadcasts.

许多AM收音机调谐到中频段（medium frequency band）以收听新闻广播。

5.The radio station operates in the medium frequency band (中频段) to reach a wider audience.

这家电台在中频段（medium frequency band）运营，以覆盖更广泛的受众。

作文

The concept of the medium frequency band is essential in various fields, particularly in telecommunications and broadcasting. The medium frequency band refers to a specific range of radio frequencies that typically spans from 300 kHz to 3 MHz. This frequency range is crucial for long-distance communication, as it allows radio waves to travel beyond the horizon by reflecting off the ionosphere. One of the most notable applications of the medium frequency band is in AM (Amplitude Modulation) radio broadcasting. AM radio stations often operate within this frequency range, enabling them to reach audiences over vast distances, especially during nighttime when atmospheric conditions favor long-range transmission.In addition to radio broadcasting, the medium frequency band is also utilized in maritime communication. Ships at sea rely on this frequency range to communicate with coastal stations and other vessels. The ability of medium frequency band signals to penetrate through various obstacles, such as buildings and trees, makes them ideal for urban environments where high-frequency signals may be obstructed.However, the medium frequency band is not without its challenges. Interference from electronic devices, natural phenomena like lightning, and other radio transmissions can disrupt the clarity of signals within this frequency range. As technology advances, the demand for more efficient communication methods has led to the exploration of higher frequency bands, such as VHF (Very High Frequency) and UHF (Ultra High Frequency). Despite this trend, the medium frequency band remains relevant due to its unique properties and widespread use.Moreover, the medium frequency band plays a vital role in emergency communication systems. During disasters or emergencies, reliable communication is critical for coordination and safety. The robustness of the medium frequency band allows for effective communication even in adverse conditions, making it an invaluable resource for emergency responders.In conclusion, understanding the medium frequency band is crucial for anyone involved in the fields of telecommunications, broadcasting, or emergency management. Its unique characteristics enable long-distance communication, making it indispensable in various applications. As we continue to advance technologically, it is important to recognize the value of the medium frequency band and its contributions to modern communication systems. Therefore, whether it is through AM radio, maritime communication, or emergency services, the medium frequency band will undoubtedly remain a significant component of our communication landscape for years to come.

中频带的概念在各个领域都至关重要，尤其是在电信和广播领域。中频带指的是一个特定的无线电频率范围，通常从300 kHz到3 MHz。这一频率范围对于远程通信至关重要，因为它允许无线电波通过反射电离层而超越地平线传播。中频带的一个显著应用是在AM（调幅）广播中。AM广播电台通常在这个频率范围内运行，使它们能够在广阔的距离内接触听众，尤其是在夜间，当大气条件有利于长距离传播时。除了广播，中频带还用于海事通信。海上的船只依赖于这一频率范围与沿海站和其他船只进行通信。中频带信号穿透各种障碍物（如建筑物和树木）的能力使其在城市环境中非常理想，在这些环境中，高频信号可能会受到阻碍。然而，中频带并不是没有挑战。来自电子设备的干扰、自然现象（如闪电）以及其他无线电传输都可能干扰这一频率范围内信号的清晰度。随着技术的进步，对更高效通信方法的需求促使人们探索更高的频率带，如VHF（甚高频）和UHF（超高频）。尽管有这种趋势，中频带由于其独特的特性和广泛的应用仍然保持相关性。此外，中频带在紧急通信系统中也发挥着至关重要的作用。在灾难或紧急情况下，可靠的通信对于协调和安全至关重要。中频带的稳健性使得即使在不利条件下也能有效沟通，这使其成为应急响应者的重要资源。总之，理解中频带对任何参与电信、广播或应急管理领域的人来说都是至关重要的。其独特的特性使得远程通信成为可能，使其在各种应用中不可或缺。因此，无论是通过AM广播、海事通信还是应急服务，中频带无疑将在未来几年内继续作为我们通信环境的重要组成部分。