
【国外标准】 Specification for alternating-current relays for railway signalling: track relays (double-element, 2-position), line relays (single-element, 2-position)
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适用范围:
暂无
标准号:
BS 1745:1951
标准名称:
Specification for alternating-current relays for railway signalling: track relays (double-element, 2-position), line relays (single-element, 2-position)
英文名称:
Specification for alternating-current relays for railway signalling: track relays (double-element, 2-position), line relays (single-element, 2-position)标准状态:
被代替-
发布日期:
1951-06-08 -
实施日期:
出版语种:
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