“射入轨道”常见的英文表达是 “launch into orbit” 。例如:The spacecraft was successfully launched into orbit.(航天器被成功射入轨道。)
此外,根据具体语境,也可以使用 “send into orbit” ,如:They plan to send a new satellite into orbit next year.(他们计划明年将一颗新卫星射入轨道。 )