Home / Standards / GB/T 17781-1999 GB/T 17781-1999 Active Technical energy systems--Basic concepts 技术能量系统 基本概念 Standard Type GBT ICS 27.010 CCS F01 Status 现行 Issue Date 1999-06-18 Implementation 1999-12-01 Responsible Dept 国家标准委 Drafting Unit N/A