回帖：https://bbs.yantuchina.com/read.php?tid=257599
https://bbs.yantuchina.com/read.php?tid=267022
坐标与经纬度转换
https://bbs.yantuchina.com/read.php?tid=262065
宁波独立坐标系统的坐标转换为经纬度
https://bbs.yantuchina.com/read.php?tid=257599