| 单词 | ducted fan |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔fanjet〕A jet engine that provides extra thrust by means of a ducted fan in its forward end that draws in extra air.涡轮风扇发动机：一种喷气发动机，前有一管道风扇吸入额外量的空气，这部分空气经压缩后提供额外推力美国传统 |
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