迄今为止，东方红三号系列卫星累计运行时间已近30年，积累了相当可观的故障数据。
By now, the working hours of DFH - 3 serial satellites had totalled up to nearly 30 years.
中国的许多火箭(“长征”号系列火箭)和人造卫星都是从本省的西昌发射中心发射的。
A number of China's rockets (Long March rockets) and satellites have been launched from the Xichang satellite launch Center.
2019年4月23号，庆祝中国人民海军建军70周年系列活动在青岛举行。
On April 23, 2019, a series of events to celebrate the seventieth anniversary of the Chinese People's Liberation Army (PLA) Navy was held in Qingdao.
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