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BS 2021:1980
Specification for separating and dropping funnels for laboratory use
被代替
发布日期 :
1980-02-29
实施日期 :
AS 2021-1994
Acoustics - Aircraft noise intrusion - Building siting and construction
现行
发布日期 :
1994-02-21
实施日期 :
AS 2021-2000
Acoustics - Aircraft noise intrusion - Building siting and construction
现行
发布日期 :
2000-08-10
实施日期 :
AS 2021:2015
Acoustics - Aircraft noise intrusion - Building siting and construction
现行
发布日期 :
2015-03-25
实施日期 :