eks 发表于 2020-5-8 14:46:59

EN 54-12:2015

EN 54-12:2015
Fire detection and fire alarm systems —
Part 12: Smoke detectors — Line detectors using an optical light beam
Publication Date: 30 April 2015

outman 发表于 2020-5-8 14:47:00

http://bbs.infoeach.com/forum.php?mod=viewthread&tid=236048&extra=
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