- 1、Ten100msecdynamicscanswereobtainedat500msecintervalsduring5.5secondperoidasthevolunteersperformedforcedinspirationandexpirationvitalcapacitymaneuvers.2、Atadistanceofabout50cm(0.5m)thetimedelayforasignalreachingfirstoneandthentheothermicrophonefro...
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