The main line is to make the symbol library perfect according to add object symbols.
根据物标来添加符号是完善符号库的主线。
参考来源 - 适合船舶江海联运的ECDIS表示库研究·2,447,543篇论文数据，部分数据来源于NoteExpress
不要总看罗经，要找出岸上显著物标。
Don't look too much at the compass. Get a good mark on shore.
天线与扫描不同步，船首线不定，物标位置也随之变化。
The antenna does not synchronize scanning. The heading line is not stable. The echo position is changed accordingly.
当位置相对于某一标志时， 该标志必须是海图上明确标出的物标。
When the position is related to a mark , the mark shall be a well-defined charted object.
应用推荐