这如果风向变化频繁咋整 |
长知识了啊!这是又回到“大航海时代”啊!大帆船~~~ |
06、07年就有商业化的"天帆"了... http://news.xinhuanet.com/photo/2007-12/17/content_7265033.htm+ m3 X3 ~% V" k http://news.xinhuanet.com/tech/2006-12/06/content_5441549.htm |
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