A.7 B.10 C.15 D.20
A.110° B.115° C.120° D.125°
A.25x250mm B.30x300mm C.40x300mm D.50x300mm
A.600mm B.500mm C.400mm D.300mm
A.100-150mm B.150-200mm C.200-250mm D.250-300mm
A.1300mm B.1500mm C.1600mm D.1700mm
A.总枢纽 B.局枢纽 C.分枢纽 D.端站间
A.10mm B.15mm C.20mm D.25mm
A.Kg/cm² B.KPa C.Pa D.MPa
