AS ISO 389.5:2003 給水用1/2 In.(12 mm)到2 In.(50 mm)聚乙烯-鋁-聚乙烯和交聯(lián)聚乙烯-鋁-交聯(lián)聚乙烯復(fù)合壓力管
Acoustics - Reference zero for the calibration of audiometric equipment - Reference equivalent threshold sound pressure levels for pure tones in frequency range 8 kHz to 16 kHz