GB％2FT2828-1987％D6％F0％C5％FA％BC％EC％B2％E9％BC％C6％CA％FD％B3％E9％D1％F9％B3％CC％D0％F2％BC％B0％B3％E9％D1％F9％B1％ED％A3％A8％CA％CA％D3％C3％D3％DA％C1％AC％D0％F8％C5％FA％B5％C4％BC％EC％B2％E9％A3％A9标准