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GB - Chinese national standards
Page 1430
GB/T 21645.9-2012 (31/12/2012)
Technical requirements for automatically switched optical network (ASON) - Part 9: External network to network interface(E-NNI)
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 2 297.20 EUR more info
GB/T 21646-2008 (11/04/2008)
Technical specification and testing methods for analog public radio interphone on 400MHz band
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 678.00 EUR more info
GB/T 21647-2008 (11/04/2008)
B-ISDN ATM Adaptation Layer Specification : Type 2 AAL
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
GB/T 21648-2023 (07/09/2023)
Industrial dense woven wire cloth
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 364.60 EUR more info
GB/T 21649.1-2024 (29/09/2024)
Particle size analysis—Image analysis methods—Part 1:Static image analysis methods
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 537.00 EUR more info
GB/T 21649.2-2025 (30/06/2025)
Particle size analysis—Image analysis methods—Part 2:Dynamic image analysis methods
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 1 111.50 EUR more info
GB/T 21650.1-2008 (16/04/2008)
Pore size distribution and porosity of solid materials by mercury porosimetry and gas adsorption - Part 1: Mercury porosimetry
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 390.70 EUR more info
GB/T 21650.1-2026 (28/01/2026)
Evaluation of pore size distribution and porosity of solid materials by mercruy poresimetry and gas adsorption—Part 1:Mercury porosimetry
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 432.50 EUR more info
GB/T 21650.2-2008 (16/04/2008)
Pore size distribution and porosity of solid materials by mercury porosimetry and gas adsorption - Part 2: Analysis of mesopores and macropores by gas adsorption
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 557.80 EUR more info
GB/T 21650.3-2011 (16/06/2011)
Pore size distribution and porosity of solid materials by mercury porosimetry and gas adsorption - Part3: Analysis of micropores by gas adsorption
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 537.00 EUR more info
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