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GB - Chinese national standards
Page 4923
GB/T 4854.3-2022 (09/03/2022)
Acoustics—Reference zero for the calibration of audiometric equipment—Part 3Reference equivalent threshold vibratory force levels for pure tones and bone vibrators
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 336.00 EUR more info
GB/T 4854.4-1999 (08/03/1999)
Acoustics--Reference zero for the calibration of audiometric equipment--Part 4:Reference levels for narrow-band masking noise
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 128.40 EUR more info
GB/T 4854.5-2008 (02/07/2008)
Acoustics - Reference zero for the calibration of audiometric equipment- Part 5: Reference equivalent threshold sound pressure levels for pure tone in the frequency range 8 kHz to 16 kHz
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 207.60 EUR more info
GB/T 4854.6-2014 (03/09/2014)
AcousticsReference zero for the calibration of audiometric equipmentPart 6: Reference hearing threshold levels for test signals of short duration
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 250.40 EUR more info
GB/T 4854.7-2008 (02/07/2008)
Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 181.90 EUR more info
GB/T 4854.8-2007 (14/11/2007)
Acoustics - Reference zero for the calibration of audiometric equipment - Part 8: Reference equivalent threshold sound pressure levels for pure tone and circumaural earphones
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 229.00 EUR more info
GB/T 4854.9-2016 (24/02/2016)
Acoustics—Reference zero for the calibration of audiometric equipment—Part 9: Preferred test conditions for the determination of reference hearing threshold levels
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 250.40 EUR more info
GB/T 4856-1993 (25/12/1993)
Package of cotton goods and kintwear
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 373.50 EUR more info
GB/T 4857.1-2019 (10/05/2019)
Packaging—Basic tests for transport packages—Part 1: Identification of parts when testing
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 96.30 EUR more info
GB/T 4857.10-2005 (25/05/2005)
Packaging-Basic tests for transport packages-Part 10:Sinusoidal vibration test method using at variable vibration frequency
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 202.30 EUR more info
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