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| Chinese National Standard Category: Acoustic Measurement |
| English Title: | Verification Regulation of Ultrasonic Power For Watt Level |
| Chinese Title: | 瓦级超声功率计 |
| Standard No.: | JJG 448-1993 |
| Category No.: | A59 |
| Issued by: | |
| Issued on: | 1993-07-16 |
| Implemented on: | 1994-2-1 |
| Status: | superseded |
| Superseded by: | JJG 448-2005 Verification Regulation of Ultrasonic Power Meters for Watt Level |
| Superseded on: | 2005-10-28 |
| Abolished on: | |
| Superseding: | JJG 448-1986 |
| Word Count: | 2000 words |
| Similar Standards: | GB/T 19889.10-2006 GB/T 19889.1-2005 GB/T 19889.7-2005 GB/T 19889.6-2005 GB/T 6881-2023 GB/T 3785.2-2023 GB/T 42559-2023 GB/T 42553-2023 GB/T 3785.1-2023 GB/T 42473-2023 GB/T 19889.7-2022 GB/T 3222.1-2022 GB/T 41283.1-2022 GB/T 19889.2-2022 GB/T 17248.1-2022 GB/Z 38251-2019 GB/T 20441.2-2018 GB/T 3785.3-2018 GB/T 7341.5-2018 GB/T 17248.5-2018 |
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