因此空气推进实验室的一个小组聚集在一起分析近年来所有的使用过的弹射驱动，看看它们是不是真的包括一种虽小但是系统的额外推进力。
So a team from JPL has got together to analyse all of the slingshotmanoeuvres that have been carried out over the years, to see if they really doinvolve a small but systematic extra boost.
这样的微小颗粒比大颗粒燃烧的更迅速，从而能提供额外的推进力，并可以更加容易控制火箭的推进。
Such tiny particles combust more rapidly than larger particles to give an additional kick, and may allow easier control over a rocket's thrust.
“黎明”号产生的推进力仅为0.092牛顿，是小型烟花火箭推进力的五十分之一。
Dawn’s produce 92 millinewtons of thrust, something like a fiftieth of the amount in a smallish firework rocket.
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