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<p>Specifies a laboratory substitution method to determine the insertion loss of ducted circular and rectangular silencers without flow, as well as other duct elements for use in ventilating and air-conditioning systems.</p>
Reģistrācijas numurs (WIID)
19620
Darbības sfēra
<p>Specifies a laboratory substitution method to determine the insertion loss of ducted circular and rectangular silencers without flow, as well as other duct elements for use in ventilating and air-conditioning systems.</p>
