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| Chinese National Standard Category: Acoustic Measurement |
| English Title: | Acoustics - Calibration of hydrophones - Part 1: Procedures for free-field calibration |
| Chinese Title: | 声学 水听器校准 第1部分：自由场校准方法 |
| Standard No.: | GB/T 4130.1-2025 |
| Category No.: | A59 |
| Issued by: | SAMR; SAC |
| Issued on: | 2025-8-1 |
| Implemented on: | 2026-2-1 |
| Status: | to be valid |
| Superseded by: | |
| Superseded on: | |
| Abolished on: | |
| Superseding: | GB/T 3223-1994 Acoustics--Free-field calibration method of underwater sound transducers |
| Word Count: | 38500 words |
| Similar Standards: |
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