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DE?? ????
?? 12??? ?? ????? ??? ??? ??.
?? ???? ?? ????? ??? ??? ??? ????: ?? ??, ?? ? ??, ?? ??, ???, ??, ????.
Professional Standard - Medicine, ?? ????
農(nóng)業(yè)農(nóng)村部, ?? ????
Jiangsu Provincial Standard of the People's Republic of China, ?? ????
ES-AENOR, ?? ????
RU-GOST R, ?? ????
Professional Standard - Agriculture, ?? ????
Professional Standard - Commodity Inspection, ?? ????
Heilongjiang Provincial Standard of the People's Republic of China, ?? ????
Shandong Provincial Standard of the People's Republic of China, ?? ????
National Association of Corrosion Engineers (NACE), ?? ????