GB/T 21098-2022灯头、灯座及检验其安全性和互换性的量规第4部分:导则及一般信息国家标准
英文:Lamp caps and holders together with gauges for the control of interchangeability and safety—Part 4: Guidelines and ge...
英文:Lamp caps and holders together with gauges for the control of interchangeability and safety—Part 4: Guidelines and ge...