声音简介
There are many types of marine machinery on board, such as Main engine, Generator, Boiler, Pumps and so on. Main engine is the heart of the engine room. Generators generate the electrical power. Boiler produces steam for all kinds of service. Pumps serve for other machines or ship’s operation. 船上有各种各样的船舶机械，例如主机、发电机、锅炉、泵等。主机是机舱的心脏。发电机制造电能。锅炉为各种设备制造蒸汽。泵为其他设备或者船舶的操作服务。
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