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DE?? ???
?? 4??? ?? ???? ??? ??? ??.
?? ???? ?? ???? ??? ??? ??? ????: ??? ? ??? ??, ???, ?? ??.
農(nóng)業(yè)農(nóng)村部, ?? ???
Group Standards of the People's Republic of China, ?? ???
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?? ???
Professional Standard - Machinery, ?? ???