编号体系 meaning in Chinese

i-j notation i-j

Steel , sae numbering systems for wrought or rolled
锻钢或轧钢的sae编号体系
Designation systems for steels . part 2 : numerical system
钢的命名体系.第2部分:编号体系
Identification cards - identification of issuers - part 1 : numbering system
识别卡发卡者标识第1部分:编号体系
Identification cards - integrated circuit cards with contacts part 5 : national numbering system and registration procedure for application identifiers
识别卡带触点的集成电路卡第5部分:应用标识符的国家编号体系和注册规程