A.4% B.6% C.16% D.18%
A.300mm B.400mm C.500mm D.600mm
A.5% B.10% C.8% D.3%
A.GB1496-1979 B.GB10827-1999 C.GB/T5142-1985 D.GB/T5182-1996
A.一套 B.两套 C.三套 D.不同制动装置
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