大圆: great circle航海术: navigation航海术: art of navigation; sailing; seacraft大圆航程: distance by great circle track大圆航法: orthodromics; orthodromy大圆航迹: great-circle track大圆航路图: great circle track chart大圆航线: great circle course; great circle sailing; great circle track; great-circle course; great-circle line; orthodrome; orthodromic line大圆航线图: great circle sailing chart; greatcirclesailingchart大圆航向: great-circle course大圆航行: great circle sailing大圆航行法: great circle sailing海轮；航海术: seacraft航海术,航行学: navigation航海术，导航: navigation航海术语: nautical terms航行；航海术；导航: navigation初始大圆航路: initial great-circle course大圆航线分段: great circle section大圆航行分段: great circle section混合大圆航线: composite track; compositetrack混合大圆航行: composite sailing天文大圆航向: astronomical great circle course最终大圆航向: final great-circle course航海术教科书: navigator
