为了生成 PDF,FOP 格式化程序需要知道文档中使用的字体,特别是使用的所有图符的宽度。
To lay out the PDF, the FOP formatter needs to know the details about the fonts to be used in the document, particularly the widths of all the glyphs used.
根据地图符号的设计原则,设计旅游地图符号及可视化功能,旅游符号数据存储和索引方案及网络性能优化方案。
According to the design principle of the map symbol, design the travel map symbol and visual function, the scheme of the symbol data store reference and network performance.
地图是地理信息可视化的载体之一,而地图符号是表达地图内容的主要形式。
The map is a carrier of visualization for geographical information, and map symbol is main expression of map data.
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