n.太空航空学...

astronautics的音标：astronautics的英式发音音标为：[ˌæstrə'nɔ:tɪks]astronautics的美式发音音标为：[ˌæstrə'nɔtɪks]...

But the general commercial satellite has the mature astronautics insurance.而一般的商业卫星则有成熟的航天保险.Beijing astronautics flight control center erupts a warm applause at once.北京航天飞行控制中心旋即爆发出一阵热烈的掌声.Should NASA be split into sepa...