astronautics是什么意思

用法例句

Development of MEMS and Nano-technology in Aerospace;

航天领域微纳米技术发展前景

The application of fuel cells in aerospace;

燃料电池在航天中的应用

Research on Series of Traveling-Wave Type Ultrasonic Motors for Aerospace Applocations;

航天用系列行波型超声波电机的研制

Reflections on the Development of Japan s Space Technology;

对日本航天高技术发展的思考

The paper describes the developing process of China s missile and space cause and the great achievements made by the pioneers.

记述了新中国成立后,在十分困难的条件下,党中央高瞻远瞩做出发展我国导弹、航天事业的重大决策,在正确政策和科学理论的指导下,我国导弹、航天事业从无到有、从小到大的发展历程;也记述了我国导弹、航天事业的开拓者们50年来忘我拼搏、无私奉献取得的伟大成就;以科学发展观和系统科学理论为指导,总结历史经验,展望未来,从总体上对我国导弹、航天事业的发展进行了对策思考。

Air Force has increased the idea of space in its doctrines.

从1959年开始,美国空军的条令中逐步增加了航天内容。

In researches of space flight, studies on the effects of microgravity on cognitive function were relatively few.

目前在载人航天的研究中 ,对于在微重力条件下认知功能变化的研究还较少。

With the prolongation of space flight,influences of various aerospace environmental factors on the astronauts become more and more severe,while ultraviolet radiation is lacking.

随着航天员在太空停留的时间逐渐延长 ,各种航天环境因素对航天员的影响更加显著 ,紫外线缺乏也成为一个重要因素。