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Pm
pm
PMD
PMO
PMS
PMT
PN
pn
PNdB
pneum-
pneuma
pneumatic
pneumatic drill
pneumatic tube
pneumatics
pneumato-
pneumatology
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PNdB
PNdB


abbr 
Definition:
 
measurements perceived noise decibel
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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