5科技成就类

　　★风云四号气象卫星 Fengyun 4A weather satellite

　　▌事件:

　　国防科工局宣布，风云四号A星卫星于9月25日投入使用。风云四号A星是我国第二代静止轨道气象卫星的首发星。

　　Fengyun-4A satellite, the first of China's second-generation geostationary orbiting weather satellites, was put into operation Monday, said the State Administration of Science, Technology and Industry for National Defence.

　　关键词：卫星在轨运行：in-orbit operation;卫星平台：satellite platform;有效载荷：payload;地面应用系统：ground application system;台风：typhoons;沙尘：sandstorms;暴雨强对流：rain storms;霾：smog;

　　天气预报：weather forecast;气象防灾减灾：meteorologic disaster prevention and reduction;应对气候变化：climate change;生态环境监测：ecological environment monitoring.

　　★脉冲星 pulsar

　　▌事件:

　　10月10日，中国科学院国家天文台宣布，经过一年调试，500米口径球面射电望远镜(FAST)已发现多颗脉冲星。FAST是世界上最大的单口径射点望远镜。

　　After one year of trial operation, China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST), the world's largest single-dish radio telescope, has identified multiple pulsars, the National Astronomical Observatories of China (NAOC) said Tuesday.

　　关键词：自转速度很快：fast rotational speed;自转周期精确：accurate rotation period;

　　引力波探测：finding gravitational waves;

　　航天器导航：navigating spacecraft.