近代历史海图数学基础的转换；浙江海区近代历史海图的平面坐标改正和深度基准面改正。
The transformation on mathematical basis of modern historic chart, the correction of the horizontal coordinate and depth data on the charts for the waters off Zhejiang coast are elaborated.
改正数方程和改正数分布图不仅为使用历史海图的科技人员提供了基础性资料，而且为历史海图深度基准面转换的研究提供了一种新的方法。
The correction equations and scatter diagrams not only provide basic data for technologists who use the historical chart, but also provide a new method f...
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