Marine engines and propulsion systems 船用发动机和推进系统
Aerodynamic Propulsion Systems 空气动力推进系统
Propulsion Systems Division 推进系统分部
Liquid Propulsion Systems Centre 的液态推进系统中心
Other propulsion systems 其它推进系统
space propulsion systems 空间推进系统
power propulsion systems 电力推进系统
Global Propulsion Systems 全球驱动系统部
Scientists and engineers are beginning to study this ability of fishes in the hope of designing more efficient propulsion systems for ships.
科学家和工程师们开始研究鱼类的这种能力，希望能设计出更有效的船舶推进系统。
What You'll Learn: What will make up the future of rocket-propulsion systems!
你将学习：火箭推进系统的未来走向。
Subsequent activity presumably has involved installing the missing electronics and propulsion systems.
接下来的事大概就可以推测出来了：安装丢失的电子设备和推进系统。
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