He says the satellite will test whether sunlight can be used as a propulsion force for space travel.

他说，这颗卫星将会测试阳光是否能用于太空旅行的推进动力。

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Based on motion similarity of microrobot drive fin and fish caudal fin, this paper discusses fish muscle hydrodynamics, and analyzes propulsion force produced by biomimetic fish-like drive fin.

基于鱼类肌肉水动力学的研究，利用鱼类尾鳍与微机器人摆翼运动相似性，对仿生鱼型微机器人摆翼所产生的推进力进行了分析。

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It is shown that the offset of propulsion force and the lower natural fundamental frequency are caused by asymmetry of turbopump and weakness of connection stiffness between propulsion and frame.

研究表明，涡轮泵不对称以及发动机与机架之间连接刚度弱是引起推力偏心和基频固有频率偏低的主要原因。

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