rocket booster rocket booster
火箭助推器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It reached Mach 4.8 in less than half a minute powered by a solid rocket booster.
NPR: Experimental Air Force Aircraft Goes Hypersonic
One of them was determining the exact moment at which an astronaut must fire a rocket booster to enter the moon's gravity field.
FORBES: The Enemy Beneath
In 2009 NASA shot a Centaur rocket booster into the moon, kicking up 350 tons of debris that spewed up six miles high.
FORBES: Move up http://i.forbesimg.com t Move down
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