ZH
EN
JP
ES
RU
DE??? ??
?? 21??? ??? ??? ??? ??? ??.
?? ???? ??? ??? ??? ??? ??? ????: ??, ?? ?? ???.
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ??? ??
Professional Standard - Aviation, ??? ??
GSO, ??? ??
Korean Agency for Technology and Standards (KATS), ??? ??
未注明發(fā)布機(jī)構(gòu), ??? ??
American Society for Testing and Materials (ASTM), ??? ??
SCC, ??? ??