字: character; word元: first; primary集: gather; assemble; collect扩充字元集: expanded character set,ecs; extended character set来源字元集: source character set文件字元集: document character set系统字元集: system character set显示字元集: display character sets虚拟字元集: virtual character set延伸字元集: extended character set执行字元集: execution character set非可载字元集: nonloadable character set单一位元组字元集: single-click多位元组字元集: mbcs; multibyte character set输出记录字元集: output record character set双位元组字元集: double byte character set,dbcs延伸图形字元集: extended graphic character set语法参引字元集: syntax-reference character set执行时间字元集: execution time character set元集: element set字元: byte; sgml; tab; wide character单元集: cellset; singleton单元集合: unit set二元集合: binary set美元集团: dollar bloc