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mang wen tu shu de bian ji chu ban
Author(s): 
Pages: 53-54
Year: Issue:  4
Journal: University publishing

Keyword:  文字盲触觉感知文字符号字线文献资料发泡油墨心目克明选题范围丝网印刷技术压印;
Abstract: <正>一、特殊的文字盲文盲文是专为盲人设计、供盲人使用、靠触觉感知的文字符号。从现在可见的文献资料看,盲文的出现已有400多年的历史,大致经历了三种形态的变迁:第一种盲文是雕刻在木板上凸起的拉丁字母,仅供盲人摸读;第二种盲文在外形上采用了拉丁字母的某些部分,用较大的铅字字母或大头针在软垫上扎出字线,
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