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| International Standard Category: Acoustic measurements and noise abatement in general |
GB/T 18696.1-2004 Acoustics - Determination of sound absorption coefficient and impedance in impedance tubes - Part 1:Method using standing wave ratio
声学 阻抗管中吸声系数和声阻抗的测量 第1部分：驻波比法 ;
| Category No.: | 17.140.01 | Valid Status: | valid |
| Issued Organization: | AQSIQ; SAC | Issued Date: | 2004-5-13 |
| Implemented Date: | 2004-12-1 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
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