h0912271847 发表于 2017-10-28 21:56:56

NFPA 270-2013

本帖最后由 h0912271847 于 2017-10-28 21:59 编辑

NFPA 270-2013
Standard Test Method for
Measurement of Smoke
Obscuration Using a Conical
Radiant Source in a
Single Closed Chamber
2013 Edition


admin 发表于 2017-10-31 14:57:53

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