ZH
EN
JP
ES
RU
DE??? ?? ??
?? 15??? ??? ?? ??? ??? ??? ??.
?? ???? ??? ?? ??? ??? ??? ??? ????: ????, ??, ???? ? ?? ??.
American Welding Society (AWS), ??? ?? ??
WRC - Welding Research Council, ??? ?? ??
Group Standards of the People's Republic of China, ??? ?? ??
Society of Automotive Engineers (SAE), ??? ?? ??
未注明發(fā)布機(jī)構(gòu), ??? ?? ??
Association of German Mechanical Engineers, ??? ?? ??
SAE - SAE International, ??? ?? ??
Korean Agency for Technology and Standards (KATS), ??? ?? ??
International Organization for Standardization (ISO), ??? ?? ??