short wave band

简明释义

短波波段

英英释义

例句

1.The short wave band (短波频段) is often used for international broadcasting, allowing stations to reach audiences across the globe.

通常用于国际广播的短波频段(短波频段)使得电台能够覆盖全球观众。

2.When traveling abroad, I always bring a radio that can access the short wave band (短波频段) to listen to news from home.

出国旅行时，我总是带一台可以接入短波频段(短波频段)的收音机，以收听来自家乡的新闻。

3.During the storm, we tuned into a short wave band (短波频段) frequency to receive emergency weather updates.

在暴风雨期间，我们调到一个短波频段(短波频段)的频率，以接收紧急天气更新。

4.The short wave band (短波频段) allows for communication even when other forms of transmission are unavailable.

即使其他传输方式不可用，短波频段(短波频段)也允许进行通信。

5.Many amateur radio operators enjoy communicating over the short wave band (短波频段) because of its ability to reach long distances.

许多业余无线电爱好者喜欢通过短波频段(短波频段)进行长距离通信。

作文

The world of radio communication is vast and complex, with various frequencies used for different purposes. One of the most intriguing segments of this spectrum is the short wave band, which spans frequencies from 3 to 30 MHz. This range is particularly notable for its ability to propagate over long distances, making it a vital tool for international broadcasting and amateur radio enthusiasts alike. The short wave band allows signals to bounce off the ionosphere, enabling them to travel beyond the horizon and reach listeners far away. This characteristic is what sets shortwave apart from other bands, such as medium wave and FM, which typically have more limited ranges.In many countries, the short wave band has been a cornerstone of communication, especially in regions where traditional infrastructure may be lacking. For instance, during times of crisis or natural disasters, shortwave radio can provide essential information and updates to areas that are cut off from other forms of communication. The resilience of the short wave band in such situations highlights its importance not just for entertainment but also for safety and emergency management.Moreover, the short wave band is home to a vibrant community of amateur radio operators who use this spectrum for personal communication and experimentation. These enthusiasts often enjoy the challenge of connecting with other operators across the globe, using various modes of transmission such as voice, Morse code, and digital signals. The thrill of making a contact with someone thousands of miles away is a unique experience that many cherish.The short wave band also plays a significant role in cultural exchange. International broadcasters utilize this spectrum to reach audiences in different countries, providing news, music, and educational content. For example, stations like Voice of America and BBC World Service have dedicated shortwave broadcasts aimed at regions where access to local media might be restricted. This not only promotes understanding and awareness among different cultures but also serves as a platform for diverse voices to be heard.However, the short wave band is not without its challenges. As technology evolves, many people have shifted to the internet for their communication needs, leading to a decline in shortwave listening. Additionally, interference from modern electronic devices can disrupt shortwave signals, making it more difficult for listeners to enjoy clear broadcasts. Despite these obstacles, the short wave band continues to hold a special place in the hearts of many radio enthusiasts and remains a topic of interest for those studying the evolution of communication.In conclusion, the short wave band represents a fascinating intersection of technology, culture, and community. Its ability to connect people across vast distances and provide crucial information in times of need underscores its significance in our increasingly interconnected world. As we look to the future, it will be interesting to see how the short wave band adapts to new technologies and continues to serve its audience, proving that even in the digital age, there is still a place for this remarkable aspect of radio communication.

无线电通信的世界广阔而复杂，不同的频率用于不同的目的。其中一个最引人入胜的频段是短波频段，它的频率范围从3到30 MHz。这个范围特别显著，因为它能够在长距离上传播，使其成为国际广播和业余无线电爱好者的重要工具。短波频段允许信号反弹到电离层，从而使信号超出视线传播，达到远方的听众。这一特性使得短波与其他频段（如中波和调频）有所不同，后者通常具有更有限的传播范围。在许多国家，短波频段一直是通信的基石，尤其是在传统基础设施可能缺乏的地区。例如，在危机或自然灾害期间，短波广播可以向被切断与其他通信形式联系的地区提供重要的信息和更新。短波频段在此类情况下的韧性突显了其不仅仅是娱乐的工具，也是安全和应急管理的重要手段。此外，短波频段还是一个充满活力的业余无线电爱好者社区的家园，这些爱好者利用这一频段进行个人通信和实验。这些爱好者常常享受与全球其他操作员连接的挑战，使用语音、摩尔斯电码和数字信号等多种传输模式。与数千英里外的人建立联系的刺激体验是许多人珍视的独特经历。短波频段在文化交流中也发挥着重要作用。国际广播公司利用这一频段接触不同国家的观众，提供新闻、音乐和教育内容。例如，美国之音和BBC世界服务等电台有专门针对当地媒体可能受到限制地区的短波广播。这不仅促进了不同文化之间的理解和意识，也为多样化的声音提供了发声的平台。然而，短波频段并非没有挑战。随着技术的发展，许多人转向互联网进行通信，导致短波收听人数下降。此外，现代电子设备的干扰可能会破坏短波信号，使听众更难享受清晰的广播。尽管面临这些障碍，短波频段仍然在许多无线电爱好者的心中占有特殊的位置，并且仍然是研究通信演变的人的兴趣话题。总之，短波频段代表了技术、文化和社区的迷人交汇点。它连接了遥远距离的人们并在需要时提供关键信息，突显了其在我们日益互联的世界中的重要性。展望未来，观察短波频段如何适应新技术并继续服务于其受众将是非常有趣的，证明即使在数字时代，这一无与伦比的无线电通信方面依然有其存在的价值。