A.200 B.150 C.250 D.275
A.0.088~0.127MPa B.0.078~0.098MPa C.0.0245~0.0343MPa D.0.0245~0.044MPa
A.3.8MPa蒸汽漏入缸體 B.2.5MPa蒸汽漏入缸體 C.0.4MPa蒸汽漏入缸體 D.真空未破