map-making 基本例句 制图 This Paper describes the advantages of the Mercator projection Based on actual examples, it discusses the application of “ slice” and“ cut” of round projection to map-making in china. 本文阐述了墨卡托投影的优越性，并以实例为基础，对“切”与“割”园柱投影在我国海疆国的应用进行了分析。 cnki