单词：space tracking network
单词：space tracking network 相关文章
He called up the post office. Where is my package? he asked. What is the tracking number? the postal worker asked. He told her the tracking number. She said, Your package is at the main post office. You can pick it up anytime. He said, I don't want t
英语第1级听力-English Level 1
SSN switched service network SS signaling system Station Equipment Station equipment is a component of telecommunications systems such as a telephone or data terminal, generally located on the user's
电信英语
1.President Barack Obama's launched a TV blitz to build public support for his health care overhaul plan. Obama became the first president to appear on five Sunday network talk and public affairs shows in the same morning. 2.The FBI has arrested a 2
美联社新闻一分钟2009年(九)月
Every year satellites are damaged or destroyed by objects orbiting the Earth's atmosphere. An Australian company is now using the latest laser technology to track these objects in order to reduce cosmic damage. Li Dong has the details. Even in space,
世界各地新闻集锦
The amount of debris orbiting the Earth has reached a tipping point for collisions, which would in turn generate more of the debris that threatens astronauts and satellites, according to a US study released on Thursday。 NASA needs a new strategic p
实用英语
By CCTV reporte Han Bin The Change-3 lunar probe will be the countrys first attempt at a soft landing on any extra terrestrial surface and the first moon landing by any country in almost 40 years. The extreme distances present new challenges for the
CCTV9英语新闻2013年12月