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GB 9706.254-2020
医用电气设备 第2-54部分:X射线摄影和透视设备的基本安全和基本性能专用要求
Medical electrical equipment—Part 2-54: Particular requirements for the basic safety and essential performance of X-ray equipment for radiography and radioscopy
GB/T 13477.22-2022
Test method for building sealants—Part 22:Determination of curing behaviour
GB/T 42275-2022
Hardmetals—Determination of total carbon content—High frequency combustion infrared absorption or thermal conductivity method
GB/T 42271-2022
Test method for resistivity of semi-insulating monocrystalline silicon carbide by contactless measurement
GB 32030-2022
Minimum allowable values of energy efficiency and energy efficiency grades for submersible motor-pumps
GB 21518-2022
Minimum allowable values of energy efficiency and energy efficiency grades for AC contactors
GB 7300.303-2022
Feed additives—Part 3: Minerals and their complexes (or chelates)—Potassium iodate