A、the SW outboard valves
B、the tailshaft LO stop valve
C、the drain valve of the boiler
D、propeller shaft sealing device
A、the SW outboard valves
B、the tailshaft LO stop valve
C、the drain valve of the boiler
D、propeller shaft sealing device
时间:2022-01-06 12:30 关键词: 船舶电气与船舶安全
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