英语词汇“ship heading marker”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ship heading marker
释义	ship heading marker ship heading marker [′ship ¦hed·iŋ ‚mär·kər] (navigation) A mark on a direction compass which indicates the position of the ship's head, such as a lubber's line, or an electronic radial sweep line on a PPI (plan position indicator).
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