Soviet aeronautical and astronautical design bureau .

苏联的主要航空航天设计局有。

In the case of astronautical endeavors the united states has made much progress .

就宇宙航行的努力来说，美国已取得了很大进步。

Urbanicom ; international astronautical congress of iaf ;

宇航联合会国际宇宙航行大会；

Graduate university for advanced studies ( sokendai ) : institute of space and astronautical science .

合研究大学院大学:宇宙科学研究本部。

In order to guarantee the astronautical mission the success , must reduce as far as possible the risk the threshold , cannot make every effort or little has problems .

为了保证航天任务的成功，必须尽量把风险降低到最低限度，力求不出或少出问题。