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1.In addition, the USAF continues to fund development work of the Aerojet (formerly Atlantic Research) Variable Flow Ducted Rocket ramjet system as a future propulsion option for an extended range AAM.

1.此外，美国空军继于航空喷气研究所（原来的大西研究所）的可变喷流管火箭发动，将其作为增程空空导弹的未来推进选项。

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原声例句
经济学人-科技

1.The objective is to develop fuel for ramjets, a type of engine that operates efficiently only above Mach 3.

目的是为冲压式喷气发动机(效率仅3赫)开发料。

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奇趣科

2.Remember, it's a ramjet that needs air to gain speed.

请记住，它是冲压式喷气发动机，需要空气来获得速度。机翻

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奇趣科

3.The ramjet being able to take off and land on its own.

冲压发动机能够自行起飞和降落。机翻

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