译：GB/T 231.2-2002 Metallic Brinell hardness test—Part 2:Verification and calibration of hardness testers

译：GB/T 230.3-2002 Metallic rockwell hardness test—Part 3:Calibration of hardness reference blocks(scales A,B,C,D,E,F,G,H,K,N,T)

译：GB/T 18892-2002 Environment protect requirements of copying machines—Power-saving requirements of electrostatic process copier

译：GB/T 18216.2-2002 Electrical safety in low voltage distribution systems up to 1000V a.c. and 1500V d.c.—Equipment for testing, measuring or monitoring of protective measuring—Part 2:Insulation resistance

译：GB/T 18889-2002 Electric cables—Test methods for accessories for power cables with rated voltages from 6kV(Um=7.2kV)up to 35kV(Um=40.5kV)

译：GB/T 231.3-2002 Metallic Brinell hardness test—Part 3:Calibration of hardness reference blocks

译：GB/T 16825.1-2002 Verification of static uniaxial testing machines—Part 1:Tension/compression testing machines—Verification and calibration of the force-measuring system

译：GB/T 18891-2002 Identification by hour numbers of the phase Conductors of 3-phase electric systems

译：GB/T 15969.5-2002 Programmable controllers—Part 5:Communications

译：GB/T 4588.3-2002 Design and use of printed boards