| 单词 | lower mast |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔crosstree〕One of the two horizontal crosspieces at the upper ends of the lower masts in fore-and-aft-rigged vessels, serving to spread the shrouds.桅顶横杆：纵帆船只中位于下桅顶部的两根水平交叉的木杆之一，用来张开桅的左右支索美国传统〔futtock plate〕An iron plate attached horizontally to the top of the lower mast to secure the topmast rigging and the upper ends of the futtock shrouds.内龙骨翼板：一种用于保护中桅索具和桅楼侧支索的最上端部分而水平地安装在低桅顶端的铁板美国传统〔futtock shroud〕One of the iron rods extending from a band on the lower mast to the futtock plate, used to brace the base of the topmast.桅楼侧支索：一种用来固定中桅底座而从低桅的一个箍圈延伸到内龙骨翼板的铁杆美国传统〔joint〕The platform was built where the Frenchman's lower mast was jointed to the upper.在“法国人”号的下桅与顶桅连接处建了一座平台。外研社新世纪〔main topmast〕The section of the mainmast on a square-rigged sailing vessel between the lower mast and the main topgallantmast.主桅中桅：横帆式帆船上位于下桅和上主桅之间的主桅部分美国传统〔spanker〕A usually gaff-headed sail set from the aftermost lower mast of a sailing ship.后纵帆：帆船上最靠近底部船桅的斜木头的帆美国传统 |
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