Home / Standards / GB/T 40799-2021 GB/T 40799-2021 Active Machining process—Test methods for essential energy efficiency data 机械加工过程 能效基础数据检测方法 Standard Type GBT ICS 25.020 CCS J30 Status 现行 Issue Date 2021-10-11 Implementation 2022-05-01 Responsible Dept 国家标准委 Drafting Unit N/A