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GB/T 6113.103-2021
Specification for radio disturbance and immunity measuring apparatus and methods—Part 1-3: Radio disturbance and immunity measuring apparatus—Ancillary equipment—Disturbances power
GB/T 6092-2021
Squares
GB/T 6068-2021
Test code for truck crane and tyre crane
GB/T 5900.1-2021
Machine tools—Connecting dimensions of spindle noses and work holding chucks—Part 1: Conical connection
GB/T 4930-2021
Microbeam analysis—Electron probe microanalysis—Guidelines for the specification of certified reference materials (CRMs)
GB/T 4893.1-2021
Test of surface coatings of furniture—Part 1: Determination of surface resistance to cold liquids
GB/T 4798.2-2021
Classification of environmental conditions—Classification of groups of environmental parameters and their severities—Part 2:Transportation and handling
GB/T 4787.1-2021
Grading capacitors for high-voltage alternating current circuit-breakers—Part 1: General
GB/T 3480.5-2021
Calculation of load capacity of spur and helical gears—Part 5：Strength and quality of materials
GB/T 2424.6-2021
Environmental testing—Part 3:Supporting documentation and guidance—Confirmation of the performance of temperature/humidity chambers
GB/T 2424.5-2021
Environmental testing—Part 3:Supporting documentation and guidance—Confirmation of the performance of temperature chambers
GB/T 2423.38-2021
Environmental testing—Part 2:Test methods—Test R:Water test method and guidance
GB/T 2423.33-2021
Environmental testing—Part 2: Test methods—Test Kca: High concentration sulfur dioxid
GB/T 2423.18-2021
Environmental testing—Part 2: Test methods—Test Kb:Salt mist, cyclic（sodium chloride solution）
GB/T 2351-2021
Fluid power systems and components—Outside diameters of tubes and inside diameters of hoses
GB/T 2076-2021
Indexable inserts for cutting tools—Designation
GB/T 1551-2021
Test method for measuring resistivity of monocrystal silicon—In-line four-point probe and direct current two-point probe method
GB/T 1029-2021
Test procedures for three-phase synchronous machines
GB/T 786.3-2021
Fluid power systems and components—Graphical symbols and circuit diagrams—Part 3: Symbol modules and connected symbols in circuit diagrams
GB/T 786.1-2021
Fluid power systems and components—Graphical symbols and circuit diagrams—Part 1: Graphical symbols
