Arcjet is a kind of propulsion device for mechanical-operation and control of spacecraft.

电弧加热发动机是一种为航天器提供机动和控制推力的装置。

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The track pin is an important component for transferring load in the propulsion device of a self-propelled gun.

履带销是自行火炮推进装置中重要的传力元件。

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So there is much important significance to deeply understanding the characteristic of electric propulsion device by studying the performance of a propeller load.

因此研究螺旋桨负载特性对于深入认识电力推进装置的特点有很重要的意义。

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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