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This standard specifies the classification, code and marking, requirements, performance inspection and use identification of dange
This standard specifies the general procedures for the application of network planning technology in project management, and is ap
This part of GB/T1 specifies the structure, drafting expression rules and format of standards, and gives relevant expression style
This standard specifies the type, parameters, technical requirements, inspection rules and marking, packaging, transportation and
This standard specifies the working procedures, time measurement methods and requirements for labor quota time measurement. This s
GB/T 23809-2009 Principles and requirements for the setting of emergency guidance systems GB/T23809-2009 Standard download decompr
This part of GB/T20000 specifies: -- Methods for determining the degree of consistency between national standards and correspondin
This standard specifies the terms and definitions, classification, requirements, test and inspection methods, acceptance rules, ma