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Database: 189759 (19 Oct 2025)
YY/T 0449-2018
Chinese Standard: 'YY/T 0449-2018'
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YY/T 0449-2018
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179
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Days<=3
Ultrasonic Doppler fetal monitor
YY/T 0449-2018
Valid
YY/T 0449-2018
SIMILAR
unprotected-true-PDFs:
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YY 0789-2024
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YY/T 0937-2022