
【国外标准】 Projectors for film strip and miniature lantern slides (for educational use) and optical lanterns.
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适用范围:
暂无
标准号:
BS 1915:1952
标准名称:
Projectors for film strip and miniature lantern slides (for educational use) and optical lanterns.
英文名称:
Projectors for film strip and miniature lantern slides (for educational use) and optical lanterns.标准状态:
被代替-
发布日期:
1952-12-30 -
实施日期:
出版语种:
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