其作为一个完整的知识体系，拥有自己的语言符号、语法和文本。
It possesses an integrated system of knowledge complete with linguistic symbols, grammar, and text.
文本和办公设备。键盘。数据和文本加工以及打字机用德文键盘。图形显示字符或符号的信息。
Text and office systems - Keyboards - German keyboard for data and text processing, as well as for typewriters, information on graphic characters or symbols.
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