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DE?? pH
?? 42??? ?? pH? ??? ??? ??.
?? ???? ?? pH? ??? ??? ??? ????: ?? ??, ??? ??, ????, ???, ??? ? ??? ??, ?? ??, ?????, ?? ??, ??, ??, ?? ? ?? ??, ??.
Japanese Industrial Standards Committee (JISC), ?? pH
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?? pH
Spanish Association for Standardization (UNE), ?? pH
Professional Standard - Petrochemical Industry, ?? pH
RU-GOST R, ?? pH
Group Standards of the People's Republic of China, ?? pH
Military Standards (MIL-STD), ?? pH
Korean Agency for Technology and Standards (KATS), ?? pH
Professional Standard - Nuclear Industry, ?? pH
RO-ASRO, ?? pH
GM Daewoo, ?? pH
KR-KS, ?? pH
Association Francaise de Normalisation, ?? pH
American Society for Testing and Materials (ASTM), ?? pH
Professional Standard - Machinery, ?? pH
GSO, ?? pH
International Organization for Standardization (ISO), ?? pH
European Committee for Standardization (CEN), ?? pH
TR-TSE, ?? pH
Defense Logistics Agency, ?? pH
Liaoning Provincial Standard of the People's Republic of China, ?? pH
SCC, ?? pH