active sonar

简明释义

主动声纳

英英释义

例句

1.During the naval exercise, the fleet practiced using active sonar for anti-submarine warfare.

在海军演习中，舰队练习使用主动声纳进行反潜战。

2.The active sonar system emitted sound waves that bounced off objects underwater.

主动声纳系统发出声波，这些声波在水下物体上反弹。

3.The fishing boat relied on active sonar to locate schools of fish quickly.

渔船依靠主动声纳快速找到鱼群。

4.By employing active sonar, the research team was able to map the ocean floor accurately.

通过使用主动声纳，研究小组能够准确绘制海底地图。

5.The submarine used active sonar to detect enemy vessels in the area.

潜艇使用主动声纳探测该地区的敌方舰艇。

作文

Active sonar is a technology used primarily in underwater exploration and navigation. It operates by emitting sound waves into the water and then listening for the echoes that bounce back from objects, such as submarines, shipwrecks, or the ocean floor. This method is particularly useful in determining the distance and size of underwater objects. In contrast to passive sonar, which only listens to sounds made by other objects, active sonar (主动声纳) actively sends out signals and analyzes the returning echoes. The principle behind active sonar (主动声纳) is based on the speed of sound in water, which is approximately 1,500 meters per second. When a sound wave is emitted, it travels through the water until it encounters an object. The wave then reflects back to the source, where the time taken for the echo to return can be measured. By calculating this time and knowing the speed of sound, one can determine the distance to the object. This capability makes active sonar (主动声纳) an invaluable tool in naval operations, marine research, and fishing industries.One of the key advantages of active sonar (主动声纳) is its ability to provide real-time information about the underwater environment. For example, during naval exercises, submarines can use active sonar (主动声纳) to detect enemy vessels or underwater obstacles, allowing for strategic planning and navigation. Similarly, researchers studying marine life can utilize active sonar (主动声纳) to locate schools of fish or monitor the movements of whales and other marine mammals.However, the use of active sonar (主动声纳) is not without controversy. Some environmentalists argue that the sound waves produced can disrupt marine ecosystems, particularly affecting the communication and navigation of marine animals like dolphins and whales. The loud noises generated by active sonar (主动声纳) can interfere with their natural behaviors, leading to disorientation and even strandings in some cases. As a result, there have been calls for stricter regulations on its use, especially in sensitive marine habitats.Despite these concerns, active sonar (主动声纳) continues to be a critical technology in various fields. In commercial fishing, for instance, fishermen rely on active sonar (主动声纳) systems to locate fish more efficiently, significantly increasing their catch rates. Furthermore, in scientific research, active sonar (主动声纳) assists in mapping the ocean floor, providing valuable data for understanding geological formations and underwater habitats.In conclusion, active sonar (主动声纳) is a powerful tool that plays a vital role in underwater exploration and navigation. While it offers significant benefits in various applications, it also raises important environmental concerns that must be addressed. The future of active sonar (主动声纳) will likely involve balancing technological advancements with the need to protect marine ecosystems, ensuring that we can continue to explore and understand our oceans without causing harm to their inhabitants.