... 负压燃烧negative-pressure firing 压力燃烧pressurized firing 天然透风natural draft机械透风mechanical draft ...
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A couple of days ago, the propulsion system was pressurized in preparation for the firing of the spacecraft's engine, which will take 35 minutes on Monday.
几天前，为了准备探测器发动机在周一的点火，推进系统进行了加压。点火过程将需要35分钟。
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