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Database: 189760 (18 Oct 2025)
JJG 655-1990
Chinese Standard: 'JJG 655-1990'
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JJG 655-1990
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Days<=3
Verification regulation of noise dosimeters
JJG 655-1990
Obsolete
JJG 655-1990
SIMILAR
unprotected-true-PDFs:
GB/T 36126-2018
GB/T 1885-1998
JJF 1070-2023
JJF 1943-2021
JJG 882-2019