基本解释n. 校准线词组短语短语compass lubber -line 罗盘标线英英字典柯林斯英英字典 a mark on a ship's compass that designates the fore-and-aft axis of the vessel (Also called lubber's line)专业释义航空、航天科学技术航向标线交通运输工程船首基线体育潜航准线