short wave aerial

简明释义

短波天线

英英释义

例句

1.He built a homemade short wave aerial for his radio experiments.

他为自己的收音机实验制作了一个自制的短波天线。

2.To improve reception, I installed a new short wave aerial.

为了提高接收效果，我安装了一个新的短波天线。

3.The short wave aerial allows us to listen to international broadcasts.

这个短波天线让我们能够收听国际广播。

4.During the storm, the short wave aerial picked up emergency signals.

在暴风雨期间，短波天线捕捉到了紧急信号。

5.The short wave aerial is essential for amateur radio enthusiasts.

对于业余无线电爱好者来说，短波天线是必不可少的。

作文

In today's world, communication has become an integral part of our lives. One of the fascinating aspects of communication technology is the use of radio waves to transmit information over long distances. Among the various types of radio waves, the short wave aerial plays a crucial role in enabling global communication. A short wave aerial (短波天线) is designed to receive and transmit shortwave radio signals, which can travel thousands of miles by bouncing off the ionosphere. This unique property makes it possible for people to connect with others across continents, sharing news, music, and even emergency broadcasts.The history of short wave aerials is quite interesting. They became popular during the early 20th century when amateur radio operators discovered their potential for long-distance communication. During World War II, short wave aerials were extensively used for military communications, allowing troops to stay connected regardless of their location. After the war, many countries invested in shortwave broadcasting for international communication, making it possible for people to listen to foreign broadcasts and learn about different cultures.One of the key advantages of using a short wave aerial (短波天线) is its ability to cover vast distances. Unlike FM or AM radio, which are limited to local broadcasts, shortwave signals can travel around the world. This means that a single short wave aerial can receive signals from multiple countries, making it a valuable tool for international listeners. For instance, a person in the United States can tune into a short wave aerial to listen to news broadcasts from Europe or Asia, gaining insights into global events that may not be covered by local media.Moreover, the short wave aerial is also a favorite among hobbyists and enthusiasts. Many people enjoy building their own short wave aerials to experiment with radio frequencies and improve their reception. This hobby not only fosters creativity but also enhances technical skills as individuals learn about electronics and signal processing. Additionally, participating in amateur radio communities allows enthusiasts to connect with like-minded individuals, sharing experiences and knowledge about radio communication.Despite the rise of digital communication methods, the short wave aerial remains relevant today. In many parts of the world, especially in remote areas, shortwave radio is still a primary source of information. During natural disasters, when other forms of communication might fail, short wave aerials can provide critical updates and instructions to affected populations. This resilience highlights the importance of maintaining and supporting shortwave broadcasting services.In conclusion, the short wave aerial (短波天线) is a remarkable invention that has shaped the way we communicate across distances. Its ability to connect people from different parts of the world and its relevance in both historical and modern contexts make it a significant aspect of communication technology. As we continue to advance in the digital age, it is essential to recognize and appreciate the role of short wave aerials in fostering global connections and promoting cultural exchange.