ducted-fan jet engine是什么意思，ducted-fan jet engine的翻译，ducted-fan jet engine音标、读音、用法和例句_开心英文字典

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ducted-fan jet engine是什么意思，ducted-fan jet engine的翻译，ducted-fan jet engine音标、读音、用法和例句_开心英文字典_柠咚词