shortwave

简明释义

英[ˈʃɔːtˈweɪv]美[ˈʃɔːrtweɪv]

n. 短波

vt. 用短波广播发射

复 数 s h o r t w a v e s

英英释义

单词用法

同义词

反义词

例句

1.You can still hear a lot on shortwave, at least in locations without too much electrical noise from TVs, computers, rechargers etc.

您能在短波听到好多电台，至少当地不会从电视、计算机、充电器等发出许多电子噪声。

2.It provides shortwave radios to schools and communities in some of the poorest areas of the world.

该组织为世界上一些最贫穷地区的学校和社区提供短波收音机。

3.Therefore, it has a practical significance to develop some fit methods of modulation with high spectrum efficiency for shortwave FH communication system.

因而，研究适合于高速数据传输的跳频通信特点且具有高效频谱利用率的调制技术具有重要的实际意义。

4.I really enjoy listening to songs and music from the different countries around the world that I find on the shortwave.

当我在电波里听到世界各国风格各异的音乐歌曲时，我充分地感受到了收听短波的乐趣。

5.Mysterious acronyms give the ads the flavor of coded Cold War era shortwave radio broadcasts.

广告里经常用一些故作神秘的缩略词，颇有冷战时期短波电台暗语播报的氛围。

6.I rented a shortwave radio, which wasn't too expensive but required a fifty-pound deposit, a lot of money for me.

我租了一个短波收音机，租金不贵，但需要支付50英镑的押金，这对我来说可是一大笔钱。

7.Therefore, it has a practical significance to develop some fit methods of modulation with high spectrum efficiency for shortwave FH communication system.

因而，研究适合于高速数据传输的跳频通信特点且具有高效频谱利用率的调制技术具有重要的实际意义。

8.The shortwave frequencies allow us to communicate over long distances.

通过短波频率，我们可以进行长距离通信。

9.The shortwave signals can sometimes be affected by atmospheric conditions.

天气条件有时会影响短波信号。

10.I enjoy listening to international news on my shortwave radio.

我喜欢在我的短波收音机上收听国际新闻。

11.During the storm, I relied on my shortwave radio for updates.

在暴风雨期间，我依靠我的短波收音机获取更新。

12.Many amateur radio operators use shortwave bands to connect with others worldwide.

许多业余无线电爱好者使用短波频段与全球其他人联系。

作文

The world of communication has evolved significantly over the last century, with various technologies emerging to connect people across vast distances. One such technology that has played a crucial role in this evolution is shortwave (短波) radio. This form of radio transmission utilizes high-frequency waves to broadcast signals over long distances, making it possible to communicate even when traditional methods fail. In this essay, I will explore the significance of shortwave (短波) radio, its applications, and its impact on global communication.Firstly, it is essential to understand how shortwave (短波) radio works. Unlike AM and FM radio, which operate on lower frequencies and are limited by the curvature of the Earth, shortwave (短波) radio can bounce off the ionosphere, allowing signals to travel beyond the horizon. This unique property enables shortwave (短波) radio to reach remote areas where other forms of communication may not be available. During times of crisis, such as natural disasters or political unrest, shortwave (短波) radio becomes an invaluable tool for disseminating information and providing updates to affected populations.Moreover, shortwave (短波) radio has been instrumental in international broadcasting. Many countries utilize shortwave (短波) technology to reach audiences around the globe. For example, the BBC World Service and Voice of America use shortwave (短波) radio to provide news and information to listeners in regions where local media may be restricted or censored. This capability fosters a more informed global citizenry and promotes cultural exchange, as listeners can access diverse perspectives from different parts of the world.Another significant aspect of shortwave (短波) radio is its role in amateur radio operations. Enthusiasts around the world engage in shortwave (短波) communications as a hobby, connecting with fellow operators regardless of geographical barriers. These amateur radio operators often provide critical support during emergencies by relaying information and coordinating rescue efforts when conventional communication systems are down. Their dedication exemplifies the spirit of community and collaboration that shortwave (短波) radio encourages.In addition to its practical applications, shortwave (短波) radio also holds historical significance. During the Cold War, shortwave (短波) broadcasts were used as a means of propaganda and information dissemination, influencing public opinion on both sides of the Iron Curtain. The ability to transmit messages across borders made shortwave (短波) radio a powerful tool in shaping political landscapes and fostering social change.Despite the rise of the internet and digital communication technologies, shortwave (短波) radio remains relevant today. It serves as a backup communication method in case of internet outages or government censorship. Additionally, many people still appreciate the charm and unpredictability of shortwave (短波) radio, as it allows them to discover new stations and cultures through the airwaves. In conclusion, shortwave (短波) radio is a remarkable technology that continues to play a vital role in global communication. Its ability to connect people across great distances, provide critical information during emergencies, and foster international understanding makes it an indispensable tool in our increasingly interconnected world. As we look to the future, it is essential to recognize and appreciate the value of shortwave (短波) radio, ensuring that it remains a part of our communication landscape for years to come.

通信的世界在过去的一个世纪中发生了显著变化，各种技术应运而生，以连接跨越广阔距离的人们。其中一种在这一演变中发挥了关键作用的技术是短波（shortwave）无线电。这种无线电传输形式利用高频波在长距离内广播信号，使得即使在传统方法失效时也能进行通信。在这篇文章中，我将探讨短波（shortwave）无线电的重要性、其应用及其对全球通信的影响。首先，了解短波（shortwave）无线电的工作原理至关重要。与在较低频率上运行并受地球曲率限制的AM和FM无线电不同，短波（shortwave）无线电可以反弹到电离层，使信号能够超越地平线。这一独特的特性使得短波（shortwave）无线电能够覆盖偏远地区，而其他形式的通信可能无法到达。在危机时期，例如自然灾害或政治动荡，短波（shortwave）无线电成为传播信息和向受影响人群提供更新的宝贵工具。此外，短波（shortwave）无线电在国际广播中也发挥了重要作用。许多国家利用短波（shortwave）技术来接触全球听众。例如，BBC世界服务和美国之声使用短波（shortwave）无线电向当地媒体可能受到限制或审查的地区提供新闻和信息。这种能力促进了更为知情的全球公民意识，并推动了文化交流，因为听众可以访问来自世界不同地区的多样化观点。短波（shortwave）无线电的另一个重要方面是它在业余无线电操作中的角色。世界各地的爱好者通过短波（shortwave）通信与志同道合的操作员进行联系，超越地理障碍。这些业余无线电操作员通常在紧急情况下提供关键支持，通过转发信息和协调救援工作来帮助当常规通信系统瘫痪时。他们的奉献精神体现了短波（shortwave）无线电所鼓励的社区和合作的精神。除了其实用应用外，短波（shortwave）无线电还具有历史意义。在冷战期间，短波（shortwave）广播被用作宣传和信息传播的手段，影响双方的公众舆论。跨越国界传递信息的能力使得短波（shortwave）无线电成为塑造政治格局和促进社会变革的强大工具。尽管互联网和数字通信技术的兴起，短波（shortwave）无线电今天仍然保持相关性。它作为互联网中断或政府审查时的备份通信方式。此外，许多人仍然欣赏短波（shortwave）无线电的魅力和不可预测性，因为它让他们通过电波发现新电台和文化。总之，短波（shortwave）无线电是一项卓越的技术，继续在全球通信中发挥重要作用。它能够跨越伟大的距离连接人们，在紧急情况下提供关键信息，并促进国际理解，使其成为我们日益互联的世界中不可或缺的工具。展望未来，我们必须认识到并欣赏短波（shortwave）无线电的价值，确保它在未来数年内仍然是我们通信领域的一部分。