一款是来自普惠公司的新型喷气发动机GTF，普惠隶属于美国联合技术公司。

One is the geared turbofan (GTF), a new type of jet engine from Pratt &Whitney, part of America’s United Technologies group.

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一款是来自普惠公司的新型喷气发动机GTF，普惠隶属于美国联合技术公司。

One is the geared turbofan (GTF), a new type of jet engine from Pratt & Whitney, part of America's United Technologies group.

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这架飞机是美国空军研究实验室，美国国防部，波音公司和普惠洛克达因公司的共同研究成果

The aircraft is a collaborative effort between the U.S. Air Force Research Laboratory, the Defense Advanced Research Projects Agency, Boeing and Pratt &Whitney Rocketdyne.

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