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DE???? ???? ?? ??
?? 26??? ???? ???? ?? ??? ??? ??? ??.
?? ???? ???? ???? ?? ??? ??? ??? ??? ????: ???, ??? ?? ? ?? ??, ??, ?? ? ??? ?? ? ??, ??? ??, ?? ?? ??, ??? ??, ??, ??(??)? ?? ? ??, ??.
German Institute for Standardization, ???? ???? ?? ??
Group Standards of the People's Republic of China, ???? ???? ?? ??
SCC, ???? ???? ?? ??
BE-NBN, ???? ???? ?? ??
- NBN S 21-107-1988 ?? ?? ?? ???? ?? ??. ?? 7: ??? ?? ???, ? ??, ? ?? ?? ??? ??? ???? ???
未注明發布機構, ???? ???? ?? ??
British Standards Institution (BSI), ???? ???? ?? ??
Korean Agency for Technology and Standards (KATS), ???? ???? ?? ??
International Organization for Standardization (ISO), ???? ???? ?? ??
American National Standards Institute (ANSI), ???? ???? ?? ??
Association Francaise de Normalisation, ???? ???? ?? ??
Danish Standards Foundation, ???? ???? ?? ??
VN-TCVN, ???? ???? ?? ??
Qinghai Provincial Standard of the People's Republic of China, ???? ???? ?? ??