
【国外标准】 Specification for tractive armature direct current neutral-polar line relays for railway signalling
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适用范围:
暂无
标准号:
BS 519:1950
标准名称:
Specification for tractive armature direct current neutral-polar line relays for railway signalling
英文名称:
Specification for tractive armature direct current neutral-polar line relays for railway signalling标准状态:
被代替-
发布日期:
1950-07-14 -
实施日期:
出版语种:
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