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| 1. | information technology . keyboard layouts for text and office systems . part 7 : symbols used to represent functions
信息技术.文本和办公系统用键盘布局.第7部分:显示功能用的符号
| | 2. | information technology - keyboard layouts for text and office systems - part 7 : symbols used to represent functions
信息技术.文本和办公系统键盘布局.第7部分:用于表示功能的符号
| | 3. | text and office systems - keyboards - part 6 : german keyboard for data and text processing as well as for typewriters ; information on the symbols to be used to represent functions
文本和办公系统.键盘.第6部分:数据和文本加工以及打
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