| 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 |