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DE?????
?? 48??? ?????? ??? ??? ??.
?? ???? ?????? ??? ??? ??? ????: ????, ?? ??, ?? ??, ??? ??, ????, ?? ?? ???.
VN-TCVN, ?????
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?????
Group Standards of the People's Republic of China, ?????
Professional Standard - Aviation, ?????
RU-GOST R, ?????
Heilongjiang Provincial Standard of the People's Republic of China, ?????
Professional Standard - Non-ferrous Metal, ?????
Professional Standard - Ferrous Metallurgy, ?????
American National Standards Institute (ANSI), ?????
未注明發(fā)布機(jī)構(gòu), ?????
American Society for Testing and Materials (ASTM), ?????
Professional Standard - Building Materials, ?????
工業(yè)和信息化部, ?????