俄罗斯未能将商业卫星送入指定轨道_科技Science

moscow - russia's space program suffered another embarrassing failure wednesday, when a booster rocket failed to put an arab commercial satellite to a designated orbit, officials said.

the arabsat 4a telecommunications satellite owned by the saudi arabsat company was launched from the baikonur cosmodrome in kazakhstan. it was atop a rocket equipped with an additional booster stage, the russian federal space agency said in a statement.

the rocket successfully delivered the satellite to a preliminary orbit, but the booster failed to function properly and could not deliver the satellite to a designated orbit, the agency said.

注释：

1、booster rocket：推助火箭
2、commercial satellite：商业卫星
3、designated orbit：指定轨道
4、telecommunications satellite：通信卫星
5、launch：v. 发射（导弹、火箭等）
6、cosmodrome：n. 人造卫星发射基地
7、russian federal space agency：俄罗斯太空总署
8、preliminary orbit：最初轨道
9、booster：n. 推进器