標(biāo)題: ASTM E 1408-1991 門板和門系統(tǒng)聲衰減的實(shí)驗(yàn)室測量方法 [打印本頁] 作者: 兌水 時間: 2009-11-23 04:41 標(biāo)題: ASTM E 1408-1991 門板和門系統(tǒng)聲衰減的實(shí)驗(yàn)室測量方法 E1408-91(2000) Standard Test Method for Laboratory Measurement of the Sound Transmission Loss of Door Panels and Door Systems