cosmonautics meaning in English

n.
宇(宙)航(行)学，航天学。

It can be widely used in the petroleum , chemical , machinery - building , cosmonautics and motors industries
它具有较强的耐化学腐蚀性能，较高的机械强度，耐磨性好，耐高温，自润滑性好。
With the soaring development in cosmonautics , aeronautics , telecommunication , development of new lighting and alloy material , there are tremendous demands of gallium in both domestic and international market
随着航天、航空、通讯、照明新材料、合金新材料等高科技技术的迅猛发展，国内外市场对金属镓这一稀有金属的需求将会迅速增加。