Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
LoginRegister
Position: Search valid to be valid superseded to be superseded abolished to be abolished
Standard No. Title Price(USD) Delivery Status Add to Cart
GB/T 25498.3-2010 Electroacoustics - Simulators of human head and ear - Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry 180.0 via email in 1~3 business day valid
GB/T 20441.1-2010 Electroacoustics - Measurement microphones - Part 1: Specifications for laboratory standard microphones 180.0 via email in 1~3 business day valid
GB/T 20441.4-2006 Measurement microphones—Part 4: Specifications for working standard microphones 165.0 via email in 1~3 business day valid
GB/T 25102.100-2010 Electroacoustics—Hearing aids—Part 0:Measurement of electroacoustical characteriistics 300.0 via email in 1~3 business day valid
GB/T 15952-2010 Electroacoustics - Specifications for personal sound exposure meters 360.0 via email in 1~3 business day valid
GB/T 20441.3-2010 Electroacoustics - Measurement microphone - Part 3: Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique 300.0 via email in 1~3 business day valid
GB/T 3769-2010 Electroacoustics - Scales and sizes for plotting frequency characteristics and polar diagrams 180.0 via email in 1 business day valid
GB/T 25102.100-2010 Electroacoustics—Hearing aids—Part 0:Measurement of electroacoustical characteriistics 300.0 via email in 1~3 business day valid
GB/T 15261-2008 Measurement methods for acoustic properties of ultrasonically tissue-mimicking materials 210.0 via email in 1~3 business day valid
GB/T 25102.2-2010 Electroacoustics—Hearing aids—Part 2:Hearing aids with automatic gain control circuits 330.0 via email in 1~3 business day valid
YY/T 0642-2014 Ultrasonics―Field characterization―Test methods for the determination of thermal and mechanical indices related to medical diagnostic ultrasonic fields 690.0 via email in 1~8 business day valid
GB/T 15173-2010 Electroacoustics—Sound calibrators 990.0 via email in 1~3 business day valid
GB/T 3241-2010 Electroacoustics - Octave-band and fractional-octave-band filters 390.0 via email in 1~3 business day valid
GB/T 25498.1-2010 Electroacoustics - Simulators of human head and ear - Part 1: Ear simulator for the calibration of supra-aural earphones 210.0 via email in 1~3 business day valid
GB/T 3785.2-2010 Electroacoustics—Sound level meters—Part 2:Pattern evaluation tests 420.0 via email in 1~5 business day superseded
GB/T 3785.1-2010 Electroacoustics—Sound level meters—Part 1:Specifications 450.0 via email in 1~3 business day valid
YY/T 0458-2014 Technical requirements for ultrasonically blood-mimicking Doppler phantom 315.0 via email in 1~5 business day valid
GB/T 25102.1-2010 Electroacoustics - Hearing aids - Part 1:Hearing aids with induction pick-up coil input 90.0 via email in 1~3 business day valid
GB/T 25102.4-2010 Electroacoustics—Hearing aids—Part 4:Induction loop systems for hearing aid purposes—Magnetic field strength 450.0 via email in 1~3 business day valid
YY/T 0458-2003 Technical requirements for ultrasonically blood-mimicking Doppler phantom 285.0 via email in 1~3 business day superseded
About Us | Contact Us | Payment
Tel: +86-10-8572 5655 | Fax: +86-10-8581 9515 | Email: coc@codeofchina.com | Send me a messageQQ: 672269886
Copyright: Codeofchina Inc 2008-2020