ANSI Y32.7-1972 标准详情
- 标准号:ANSI Y32.7-1972
- 中文标题:铁路地图和概貌图的图形符号
- 英文标题:Graphic symbols for railroad maps and profiles
- 标准类别:美国国家标准
- 发布日期:1972
It is required that when graphic symbols are used from this Standard or another Standard, that have a similar or identical shape or configuration, and are shown on the same drawing or set of drawings, steps shall be taken (such as: reference or cauti
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