
【国外标准】 Cast manhole covers, road gully gratings and frames for drainage purposes
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适用范围:
暂无
标准号:
BS 497:1945
标准名称:
Cast manhole covers, road gully gratings and frames for drainage purposes
英文名称:
Cast manhole covers, road gully gratings and frames for drainage purposes标准状态:
被代替-
发布日期:
1949-02-01 -
实施日期:
出版语种:
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