The structure of map symbol is discussed at first in this thesis which points out it is the important part of GIS system. The symbol structure is made based on composite pattern.
全文首先对地图符号的结构展开论述，指出地图符号的建设是GIS系统的重要组成部分，并提出基于组合模式的符号结构。
Not every tag is a simple symbol in the SXML structure; specifically, a namespace-qualified tag is a pair instead.
SXML结构中，每个标签并非都是简单的符号，特别地，命名空间限定的标签就有两个符号。
The number he was referring to, which goes by the symbol alpha and the rather more long-winded name of the fine-structure constant, is magic indeed.
他所指的数字依据字母阿尔法和一个更加冗长的精细结构常数，该数的确神奇。
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