Encyclopædia Americana: A Popular Dictionary of Arts, Sciences, Literature, History, Politics, and Biography, Brought Down to the Present Time; Including a Copious Collection of Original Articles in American Biography; on the Basis of the Seventh Edition of the German Conversations-Lexicon, 第 11 卷Francis Lieber Thomas, Cowperthwait, & Company, 1840 |
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第 1 到 3 筆結果,共 35 筆
第 374 頁
... sail , hoisting up and down abaft the mast . Some ships have similar gaff - sails on the fore and main - masts , which are found of great use in gales of wind , as a substitute for storm stay - sails . Most carry , also , light stay - sails ...
... sail , hoisting up and down abaft the mast . Some ships have similar gaff - sails on the fore and main - masts , which are found of great use in gales of wind , as a substitute for storm stay - sails . Most carry , also , light stay - sails ...
第 375 頁
... sails , being acted upon in an opposite direction , are forced to the left ; but the fore sails are forward of the centre of rotation , while the after sails are abaft it ; consequently the efforts which they respectively exert will ...
... sails , being acted upon in an opposite direction , are forced to the left ; but the fore sails are forward of the centre of rotation , while the after sails are abaft it ; consequently the efforts which they respectively exert will ...
第 377 頁
... sails catch aback , and the fore sails , soon masking the after ones , act with a powerful lever to turn the bow . At length , having come head to wind , without loss of headway , and the evolution being certain , the after yards are ...
... sails catch aback , and the fore sails , soon masking the after ones , act with a powerful lever to turn the bow . At length , having come head to wind , without loss of headway , and the evolution being certain , the after yards are ...
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