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DE?? ??? 20
?? 115??? ?? ??? 20? ??? ??? ??.
?? ???? ?? ??? 20? ??? ??? ??? ????: ?? ??, ?? ? ?? ??, ??, ?? ? ?? ??, ??? ??, ?? ?? ???, ?? ??, ???, ???, ???, ????, ?? ??? ? ??? ???? ??, ????, ??, ????, ????, ?? ? ?? ??, ?? ??, ???, ???, ??? ? ??? ?????, ???? ??? ?? ? ??, ?? ??, ???? ????, ??? ???, ???, ???, ???, ???, ??????.
American Society for Testing and Materials (ASTM), ?? ??? 20
International Telecommunication Union (ITU), ?? ??? 20
Professional Standard - Agriculture, ?? ??? 20
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?? ??? 20
Group Standards of the People's Republic of China, ?? ??? 20
國家市場監督管理總局、中國國家標準化管理委員會, ?? ??? 20
Danish Standards Foundation, ?? ??? 20
Standards Norway, ?? ??? 20
National Metrological Technical Specifications of the People's Republic of China, ?? ??? 20
Society of Automotive Engineers (SAE), ?? ??? 20
Professional Standard - Commodity Inspection, ?? ??? 20
國家質量監督檢驗檢疫總局, ?? ??? 20
Fujian Provincial Standard of the People's Republic of China, ?? ??? 20
British Standards Institution (BSI), ?? ??? 20
National Metrological Verification Regulations of the People's Republic of China, ?? ??? 20
German Institute for Standardization, ?? ??? 20
Standard Association of Australia （SAA）, ?? ??? 20
CZ-CSN, ?? ??? 20
UNKNOWN, ?? ??? 20
- KJ 201908 ?? ???? ???? ?? ????? ???? ???? ?????.
HU-MSZT, ?? ??? 20
International Organization for Standardization (ISO), ?? ??? 20
Professional Standard - Education, ?? ??? 20
TIA - Telecommunications Industry Association, ?? ??? 20
Shaanxi Provincial Standard of the People's Republic of China, ?? ??? 20
PL-PKN, ?? ??? 20
GCC Standardization Organization, ?? ??? 20
International Electrotechnical Commission (IEC), ?? ??? 20
Professional Standard - Petroleum, ?? ??? 20
American Water Works Association (AWWA), ?? ??? 20
The Directorate General of Specifications and Metrology (DGSM) , ?? ??? 20
Hebei Provincial Standard of the People's Republic of China, ?? ??? 20
International Commission on Illumination (CIE), ?? ??? 20