短語詞組短語nautical harbor chart 海港圖nautical l chart 航海圖Electronic Nautical Chart 電子海圖;縂結(jié)了電子海圖a nautical chart 航海圖nautical chart database 海圖數(shù)據(jù)庫nautical chart information 海圖信息nautical chart information system 海圖信息系統(tǒng)vector nautical chart 矢量海圖digital nautical chart 數(shù)字海圖 返回 nautical chart