GB/T 39891-202152kV及以上断路器电气耐久性试验方法标准
英文:Electrical endurance testing for circuit-breakers above a rated voltage of 52 kV GB/T 39891-2021介绍: 国家标准《52kV及以上断路器电气...
英文:Electrical endurance testing for circuit-breakers above a rated voltage of 52 kV GB/T 39891-2021介绍: 国家标准《52kV及以上断路器电气...
英文:General technical specification for mobile laboratory of sample collection and treatment GB/T 31016-2021介绍: 国家标准《样品采集...
英文:Microbeam analysis—Electron probe microanalysis—Guidelines for the specification of certified reference materials (CR...
英文:Evaluation method for corrosion resistance of hollow fiber membrane to chemical cleaning agent GB/T 40258-2021介绍: 国家标...