2016年CRI Shanghai Set to Use Drone for Firefighting
时间：2019-02-14 作者：英语课 分类：2016CRI中国国际广播电台
The 1.5-kilogram drones, made of carbon fiber 1, are equipped with an infrared 2 cameras, allowing them to see in the dark.
They will also be fitted with radar 3 systems and communications antenna 4 to extend monitoring capabilities 5.
But the truly outstanding feature of these drones is said to be their ability to stay airborne around-the-clock.
Chen Guangwen is responsible for developing the new drone models and explains how these drones are able to stay in the air for so long.
"The conventional drones are powered by gasoline, methanol or lithium batteries, which limit the flying time and can be a trouble. Our drones are powered by a ground facility that supplies electricity."
A team of trained operators will have permission to fly the unmanned aircraft up to 100 meters above ground and 1,000 meters away from the point it is being controlled.
Drones are increasingly being used in China for public security tasks, such as firefighting and anti-terrorism operations.
In 2015, the country's Ministry 6 of Public Security dispatched drones during emergency responses on about 500 occasions.
Tang Qianjin is an expert from the ministry.
He says drones cost less than police helicopters and are more flexible in conducting surveillance:
"In terms of perspective, they have a large-scale visual angle and can take an overall view of the ground situation, which lack traditional surveillance means. Then they are flexible. Actually we used to rely on fixed 7 surveillance cameras, but drones are maneuverable,"
In addition, Tang says the non-stop power supply of drones allows them to have greater use in high security events.
"A lot of events of high security could last for half a day or even longer. Previously 8, we would have to find a high commanding point to photograph the entire process."
The new drones are also expected to be used for conducting missions including transportation control, forest fire prevention, and preservation 9 of cultural relics 10.
For CRI, this is Huang Yue.
- The basic structural unit of yarn is the fiber.纤维是纱的基本结构单元。
- The material must be free of fiber clumps.这种材料必须无纤维块。
- Infrared is widely used in industry and medical science.红外线广泛应用于工业和医学科学。
- Infrared radiation has wavelengths longer than those of visible light.红外辐射的波长比可见光的波长长。
- They are following the flight of an aircraft by radar.他们正在用雷达追踪一架飞机的飞行。
- Enemy ships were detected on the radar.敌舰的影像已显现在雷达上。
- The workman fixed the antenna to the roof of the house.工人把天线固定在房顶上。
- In our village, there is an antenna on every roof for receiving TV signals.在我们村里，每家房顶上都有天线接收电视信号。
- He was somewhat pompous and had a high opinion of his own capabilities. 他有点自大，自视甚高。 来自辞典例句
- Some programmers use tabs to break complex product capabilities into smaller chunks. 一些程序员认为，标签可以将复杂的功能分为每个窗格一组简单的功能。 来自About Face 3交互设计精髓
- They sent a deputation to the ministry to complain.他们派了一个代表团到部里投诉。
- We probed the Air Ministry statements.我们调查了空军部的记录。
- Have you two fixed on a date for the wedding yet?你们俩选定婚期了吗？
- Once the aim is fixed,we should not change it arbitrarily.目标一旦确定，我们就不应该随意改变。
- The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
- Let me digress for a moment and explain what had happened previously.让我岔开一会儿，解释原先发生了什么。
- The police are responsible for the preservation of law and order.警察负责维持法律与秩序。
- The picture is in an excellent state of preservation.这幅画保存得极为完好。