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DE?? ??? ???? ?? ? ??
?? 5??? ?? ??? ???? ?? ? ??? ??? ??? ??.
?? ???? ?? ??? ???? ?? ? ??? ??? ??? ??? ????: ??? ??, ??, ??, ?? ??, ?? ??.
Taiwan Provincial Standard of the People's Republic of China, ?? ??? ???? ?? ? ??
The American Road & Transportation Builders Association, ?? ??? ???? ?? ? ??
Korean Agency for Technology and Standards (KATS), ?? ??? ???? ?? ? ??
American Society for Testing and Materials (ASTM), ?? ??? ???? ?? ? ??