2558| 5
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涡扇叶片 |
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点评
国外某纪录片似乎提到过,因为是专利,一句话带过~
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小黑屋|手机版|Archiver|机械必威体育网址 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
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