medium waves

简明释义

中波

英英释义

例句

1.During the storm, we could only receive signals from medium waves frequencies.

在暴风雨期间，我们只能接收到来自中波频率的信号。

2.The medium waves band is ideal for long-distance communication.

中波频段非常适合远距离通信。

3.Children often listen to stories broadcasted on medium waves during their bedtime.

孩子们常常在睡觉前收听通过中波播出的故事。

4.The radio station broadcasts on medium waves to reach a wider audience.

这个广播电台通过中波播出，以覆盖更广泛的听众。

5.Many older radios still have the option to tune into medium waves for local stations.

许多老式收音机仍然可以调到中波以接收本地电台。

作文

In the world of radio broadcasting, different frequencies are used to transmit signals, and one of the key categories of these frequencies is known as medium waves. The term medium waves refers to a specific range of radio frequencies that fall between long waves and short waves. Typically, this range is from 530 kHz to 1700 kHz. Understanding medium waves is essential for anyone interested in the field of radio communication, as they play a crucial role in how we receive audio content across various regions.The significance of medium waves lies in their ability to cover vast distances. Unlike short waves, which can bounce off the atmosphere and reach far-off places, medium waves are primarily used for local and regional broadcasts. This makes them particularly effective for AM radio stations, which often rely on medium waves to reach their audiences. For instance, if you tune into your local AM station, it is likely broadcasting on a frequency within the medium waves range.One of the key characteristics of medium waves is their propagation. During the day, medium waves tend to travel in a straight line, which means that their reach is limited to the horizon. However, at night, the behavior of medium waves changes due to the ionosphere's influence. The ionosphere acts as a reflective layer for radio waves, allowing medium waves to bounce back to the Earth and travel much farther than during the day. This phenomenon enables listeners to pick up signals from distant stations after sunset, which can be quite fascinating.Despite the advancements in technology and the rise of digital broadcasting, medium waves continue to hold their ground in the radio industry. Many people still prefer the warmth and familiarity of AM radio, especially for news, talk shows, and sports commentary. The sound quality of medium waves may not match that of FM or digital broadcasts, but the accessibility and simplicity of AM radio make it a popular choice for many listeners.Furthermore, medium waves have cultural significance in various regions. In some countries, traditional music and local programming are broadcasted on medium waves, helping to preserve cultural heritage and connect communities. This aspect of medium waves highlights their importance beyond mere technology; they serve as a medium for cultural expression and community engagement.In conclusion, the term medium waves encompasses a vital part of radio communication that has stood the test of time. From their unique propagation characteristics to their role in local broadcasting, medium waves remain an integral part of our auditory landscape. As technology continues to evolve, it is essential to appreciate the historical and cultural context of medium waves and recognize their ongoing relevance in today's media environment.

在广播电台的世界中，不同的频率被用来传输信号，其中一个关键类别的频率被称为中波。术语中波指的是介于长波和短波之间的一组特定无线电频率。通常，这个范围是从530 kHz到1700 kHz。理解中波对于任何对无线电通信领域感兴趣的人来说都是至关重要的，因为它们在我们接收各个地区的音频内容方面发挥着关键作用。中波的重要性在于它们能够覆盖广阔的距离。与短波不同，短波可以反弹到大气层并到达遥远的地方，而中波主要用于本地和区域广播。这使得它们特别适合AM广播电台，这些电台通常依赖于中波来接触其听众。例如，如果你调到当地的AM电台，它很可能在中波范围内的频率上广播。中波的一个关键特征是它们的传播。在白天，中波往往沿直线传播，这意味着它们的覆盖范围仅限于地平线。然而，在夜间，由于电离层的影响，中波的行为发生了变化。电离层作为无线电波的反射层，使得中波能够反弹回地球并比白天传播得更远。这种现象使得听众在日落后能够接收到来自远方电台的信号，这可能相当迷人。尽管技术不断进步，数字广播崛起，但中波在广播行业中仍然占有一席之地。许多人仍然喜欢AM广播的温暖和熟悉感，尤其是新闻、谈话节目和体育评论。虽然中波的音质可能无法与FM或数字广播相媲美，但AM广播的可及性和简单性使其成为许多听众的热门选择。此外，中波在各个地区具有文化意义。在一些国家，传统音乐和地方节目通过中波广播，有助于保护文化遗产并连接社区。这个中波的方面强调了它们超越单纯技术的重要性；它们作为文化表达和社区参与的媒介。总之，术语中波涵盖了无线电通信的重要组成部分，这一部分经受住了时间的考验。从它们独特的传播特性到它们在本地广播中的作用，中波仍然是我们听觉环境的一个不可或缺的部分。随着技术的不断发展，欣赏中波的历史和文化背景，并认识到它们在当今媒体环境中的持续相关性是至关重要的。