
【国外标准】 Formulae for calculating intensities of lighthouse beams and beams from cognate projection apparatus.
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适用范围:
暂无
标准号:
BS 942:1941
标准名称:
Formulae for calculating intensities of lighthouse beams and beams from cognate projection apparatus.
英文名称:
Formulae for calculating intensities of lighthouse beams and beams from cognate projection apparatus.标准状态:
被代替-
发布日期:
1941-02-17 -
实施日期:
出版语种:
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