There is still a significant gap in current propulsion technology and what may be needed for an interstellar mission.

我们现有的推进技术和我们需要的应用于星际飞行的推进技术仍然有很大的差距。

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An electric propulsion technology for miniature satellites aims to give them more mobility - and may eventually allow them to take on deep-space missions.

一项应用在迷你卫星上面的电子推进技术旨在给它们更大的移动能力——并且可能最终允许它们进行深度太空任务。

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Hybrid motor technology is a new type of propulsion technology with bright application prospect.

混合发动机技术是一项新型的、具有广阔发展前景的推进技术。

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Eventually, the X-51's hypersonic propulsion technology may be applied to civil aviation as well.

MSN: Hypersonic aircraft taken out for a trial run on B-52 bomber

The second propulsion technology on Strand is its pulsed plasma thrusters.

BBC: Strand-1 'phone-sat' ready for orbit

The key to future space travel lies in biotechnology, not propulsion technology, say experts who have suggested GM trees could grow their own greenhouses on Mars.

BBC: Into a new millennium of science