美国摩托罗拉公司于1991年开始组建的铱星公司,至今年一季度已亏损5.05亿美元而不得不忍痛宣布破产,这一投资50亿美元的浩大工程遽告终止。 这是一个由77颗(后来减为66颗)低轨道卫星组成的移动通信系统,并以元素周期表上原子序数为77 The Iridium satellite company that Motorola of the United States started to set up in 1991 has already lost 500 million U.S. dollars in the first quarter of this year and has to endure the bankruptcy announcement. The massive investment of 5 billion U.S. dollars was terminated. This is a mobile communications system consisting of 77 (later reduced to 66) low-orbiting satellites and is based on the periodic table of atomic numbers 77