Electrical rocket engine is a new type of space propulsion system.

电火箭发动机是一种新型的空间推进装置。

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Hydrazine decomposition thruster with canted nozzle is being more and more utilized in space propulsion system.

折角喷管肼分解发动机在空间推进系统正得到越来越多的应用。

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The general integral equations are derived for liquid and gas components of space propulsion systems with liquid propellant rocket engine.

针对采用液体推进剂火箭发动机的空间推进系统，推导了系统液路和气路的通用积分形式方程。

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They work for the American space agency's Jet Propulsion Laboratory in California.

VOA: special.2009.08.25

From news that Germany met half the country's energy needs with solar power to an Egyptian teenager who built a new quantum space propulsion system, 2012 was a big year for clean tech.

ENGADGET: Inhabitat's Week in Green: biological concrete, flexible solar cells and the top wearable tech of 2012

Listeners will need to employ a bit of imagination to match Johannsson's composition to the title "Melodia (Guidelines for a Space Propulsion Device Based on Heim's Quantum Theory), " but it's hard to deny the propulsion at work here.

NPR: Johann Johannsson: Ambience In Action

Export controls also prompted the European Space Agency to pay to develop a European supplier of solenoid valves, so that European space-propulsion systems do not depend on this American part.

ECONOMIST: Space technology