engine-room annunciator 机舱传令钟 ; 机舱车钟

engine room annunciator 机舱传令钟

engine room annunciator run 发动机试车

engine room annunciator shed 机车棚

engine room annunciator sump 发动机底壳

engine room annunciator stop 发动机停车

engine room annunciator shop 发动机车间

engine room annunciator step 机车扶梯

engine room annunciator stand 发动机支架