To enhance the quality of manufacturing as responsibility, build national brand of measurement!
To enhance the quality of manufacturing as responsibility, build national brand of measurement!
GB/T 2900.69-2005 电工术语 综合业务数字网(ISDN)第1部分:总则为GB/T 2900电工术语系列标准第69部分。
GB/T 2900.69-2005 等同采用IEC 60050（716-1）：1995《国际电工词汇 综合业务数字网(ISDN) 第1部分:总则》。
GB/T 2900的本部分规定了综合业务数字网(ISDN)的术语和定义。
GB/T 2900的本部分适用于综合业务数字网(ISDN)有关的电信网络和电信业务。
China's leading enterprise in variable frequency power measurement and metering
National variable frequency power measuring instrument (metering station) founder
Research and development unit of national variable frequency power metering standard