| 单词 | 桅顶 |
| 释义 | 〔skysail〕A small square sail above the royal in a square-rigged vessel.天帆:装于横帆式船只桅顶帆上方的小方帆〔jack〕A support or brace, especially the iron crosstree on a topgallant masthead.铁横桁:撑杆或支柱,尤指上桅桅顶的铁横桁〔trestletree〕One of a pair of horizontal beams set into a masthead to support the crosstrees.桅杆纵桁:两根插入桅顶的水平梁子中的任何一根,用于支撑桅杆横顶 |
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