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| Position: Chinese Standard in English/GB 11669-1989 |
| GB 11669-1989 Acoustics - Reference zero for the calibration of pure tone conduction audiometer (English Version) | |||
| Standard No.: | GB 11669-1989 | Status: | superseded remind me the status change |
| Language: | English | File Format: | |
| Word Count: | 3500 words | Price(USD): | 105.0 remind me the price change |
| Implemented on: | 1990-4-1 | Delivery: | via email in 1~3 business day |
| Standard No.: | GB 11669-1989 |
| English Name: | Acoustics - Reference zero for the calibration of pure tone conduction audiometer |
| Chinese Name: | 声学 校准纯音骨导听力计用的标准零级 |
| Chinese Classification: | A42 Physics and Mechanics |
| Professional Classification: | GB National Standard |
| Implemented on: | 1990-4-1 |
| Status: | superseded |
| Superseded by: | GB/T 4854.3-1998 Acoustics-Reference zero for the calibration of audiometric equipment-Part 3: Reference equivalent threshold force levels for pure tones and bone vibrators |
| Superseded on: | 1998-10-1 |
| Language: | English |
| File Format: | |
| Word Count: | 3500 words |
| Price(USD): | 105.0 |
| Delivery: | via email in 1~3 business day |