A communication satellite operated as a joint venture between the Luxembourg government and Société Européenne des Satellites. It was launched on 31 January 2018, from Cape Canaveral, into a geostationary orbit at 21.5°E.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。