单词：air surveillance radar
单词：air surveillance radar 相关文章
How Can Air Traffic Controllers Lose a Plane? 马航370航班失联事件仍无进展 From VOA Learning English, this is In the News. 这里是美国之音慢速英语新闻报道。 The search for a Malaysia Airlines passenger jet expanded this week
2014年VOA慢速英语(三)月
U.S. President Donald Trump (R) speaks before signing a decision memo and a letter to members of Congress outlining a plan for privatizing the nation's air traffic control system, in the East Room of the White House, in Washington DC, on June 5, 2017
2017CRI中国国际广播电台
How Can Air Traffic Controllers Lose a Plane? 一架飞机是怎么消失无踪的 From VOA Learning English, this is In the News. The search for a Malaysia Airlines passenger jet expanded this week. The airplane, a Boeing 777, disappeared last Satur
2014年VOA慢速英语(三)月
China's energy production relies heavily on coal-fired power stations. As the world's highest emitter of greenhouse gasses, China consumed more than 400 million tones of coal last year. As many parts of China have been shrouded in a gray haze over th
英闻天下
NE China to set up two drone bases for marine surveillance SHENYANG, Oct. 20 (Xinhua) -- Two drone bases will be established in northeast China's Liaoning Province for real time surveillance on coastal waters, local authorities said Saturday. One of
英语新闻
The 1.5-kilogram drones, made of carbon fiber, are equipped with an infrared cameras, allowing them to see in the dark. They will also be fitted with radar systems and communications antenna to extend monitoring capabilities. But the truly outstandin
2016CRI中国国际广播电台