ZH
EN
JP
ES
RU
DE?? ??? ??
?? 31??? ?? ??? ??? ??? ??? ??.
?? ???? ?? ??? ??? ??? ??? ??? ????: ??? ???, ?? ? ?? ???, ?? ? ?? ??, ??, ??, ?? ? ?? ??, ?, ??, ?? ??, ??? ??, ???, ??? ??, ??? ??, ??? ?? ? ???.
German Institute for Standardization, ?? ??? ??
American National Standards Institute (ANSI), ?? ??? ??
Group Standards of the People's Republic of China, ?? ??? ??
RU-GOST R, ?? ??? ??
SCC, ?? ??? ??
American Society for Testing and Materials (ASTM), ?? ??? ??
GM North America, ?? ??? ??
American Society of Mechanical Engineers (ASME), ?? ??? ??
Aerospace Industries Association/ANSI Aerospace Standards, ?? ??? ??
Association Francaise de Normalisation, ?? ??? ??
工業和信息化部, ?? ??? ??
British Standards Institution (BSI), ?? ??? ??
International Organization for Standardization (ISO), ?? ??? ??
GSO, ?? ??? ??
NEMA - National Electrical Manufacturers Association, ?? ??? ??
Society of Automotive Engineers (SAE), ?? ??? ??
VDI - Verein Deutscher Ingenieure, ?? ??? ??