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DExrf???
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?? ???? xrf???? ??? ??? ??? ????: ?? ??, ????, ???, ??? ??, ?????, ?? ??, ??, ?? ?? ???, ?? ??, ???, ?? ??, ?? ??, ???, ????.
British Standards Institution (BSI), xrf???
International Organization for Standardization (ISO), xrf???
German Institute for Standardization, xrf???
European Committee for Standardization (CEN), xrf???
American Society for Testing and Materials (ASTM), xrf???
Professional Standard - Nuclear Industry, xrf???
The American Road & Transportation Builders Association, xrf???
未注明發(fā)布機(jī)構(gòu), xrf???
Association Francaise de Normalisation, xrf???
AENOR, xrf???
Korean Agency for Technology and Standards (KATS), xrf???