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| International Standard Category: Acoustic measurements and noise abatement in general |
GB/T 7341.4-1998 - Part 4: Equipment for extended high-frequency audiometry
听力计 第四部分:延伸高频测听的设备;
| Category No.: | 17.140.01 | Valid Status: | valid |
| Issued Organization: | AQSIQ | Issued Date: | 1998-5-8 |
| Implemented Date: | 1998-12-1 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
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