卧槽！今天逛一逛国家知识产权官网，无意间发现…中航工业成飞集团申请的专利太震撼了——一种双发串联垂直起降飞机！厉害了，我的国！！！
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| MP4 | N/A | 480P | Download |
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| MP4 | N/A | mp4a.40.2 | Download |
| MP4 | N/A | mp4a.40.5 | Download |
| MP4 | N/A | mp4a.40.2 | Download |
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