NASA plans to test a full-size solar sail for chemical-free propulsion and a deep space atomic clock.
此外,美国国家航空航天局(下文简称NASA)还计划测试一个完整尺寸的太阳帆,为航天器提供绿色推进能源,以及测试一个深空原子钟。
The resonance frequency shift in the space atomic clock prototype is analyzed in the paper. The preliminary results show that a higher accuracy is obtainable in the proposed new prototype.
在分析作者建议的一种新型空间原子钟原型中原子与场作用特点的基础上,探讨几种因素对该原型中原子跃迁频率的影响及相应的减少频移措施。
If PARCS is launched in late 2005 as expected, it may be joined on the space station by a device from the European space Agency called ACES (Atomic Clock Ensemble in space).
如果PARCS如预期在2005年末升空,随后加入国际太空站的,可能还有欧洲太空总署一个称为“太空原子钟”(aces)的装置。
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