lubber linelubber margin航向: -方位指示器 course-and-bearing in ...标线: graticule; reticule航向标: course marks横向标线: horizontal marking首向标线: heading index下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:航向标线,即可在微信中查询翻译