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DE?? ??? ??
?? 22??? ?? ??? ??? ??? ??? ??.
?? ???? ?? ??? ??? ??? ??? ??? ????: ?? ??, ?? ??, ?? ?? ??, ??.
工業(yè)和信息化部, ?? ??? ??
Universal Oil Products Company?(UOP), ?? ??? ??
American Society for Testing and Materials (ASTM), ?? ??? ??
Professional Standard - Machinery, ?? ??? ??
Group Standards of the People's Republic of China, ?? ??? ??
Professional Standard - Agriculture, ?? ??? ??
Institute of Interconnecting and Packaging Electronic Circuits (IPC), ?? ??? ??
未注明發(fā)布機(jī)構(gòu), ?? ??? ??