manned balloon
... manned aircraft 有人驾驶飞机 manned balloon 载人气球 manned craft 载人飞行器 ...
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载人高空气球飞行 manhigh balloon flight
·2,447,543篇论文数据,部分数据来源于NoteExpress
他为国家地理杂志撰写的文章。详细披露此次历史上飞行时间最长的载人气球遇到的种种艰难险阻。
His article for National Geographic details the challenges he undertook to achieve the longest manned balloon flight.
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