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DE?? ?? ????
?? 6??? ?? ?? ????? ??? ??? ??.
?? ???? ?? ?? ????? ??? ??? ??? ????: ???, ????, ?? ? ??.
農(nóng)業(yè)農(nóng)村部, ?? ?? ????
Zhejiang Provincial Standard of the People's Republic of China, ?? ?? ????
Professional Standard - Agriculture, ?? ?? ????
Fujian Provincial Standard of the People's Republic of China, ?? ?? ????
Sichuan Provincial Standard of the People's Republic of China, ?? ?? ????
Heilongjiang Provincial Standard of the People's Republic of China, ?? ?? ????