译：GB/T 19938-2005 Non-destructive testing—Radiography of welds and viewing conditions for films—Utilization of recommended patterns of image quality indicators

译：GB/T 19935-2005 Worm gears—Geometry of worms—Name plates for worm gear units, centre distances, information to be supplied to gear manufacturer by the purchaser

译：GB/T 19955.1-2005 Vapour vacuum pumps—Measurement of performance characteristics—Part 1:Measurement of volume rate of flow (pumping speed)

译：GB/T 19937-2005 Non-destructive testing—Penetrant flaw detectors—General technical requirements

译：GB/T 19934.1-2005 Hydraulic fluid power—Fatigue pressure testing of metal pressure-containing envelopes—Part 1:Test method

译：GB/T 19933.5-2005 Earth-moving machinery—Operator enclosure environment—Part 5:Windscreen defrosting system test method

译：GB/T 19933.6-2005 Earth-moving machinery—Operator enclosure environment—Part 6:Determination of effect of solar heating on operator enclosure

译：GB/T 19936.1-2005 Gears—FZG test procedures—Part 1:FZG test method A/8.3/90 for relative scuffing load-carrying capacity of oils

译：GB/T 19956.1-2005 Positive-displacement vacuum pumps—Measurement of performance characteristics—Part 1:Measurement of volume rate of flow (pumping speed)

译：GB/T 19955.2-2005 Vapour vacuum pumps—Measurement of performance characteristics—Part 2:Measurement of critical backing pressure