Nodular cast iron is now widely used in our country to make the crankshafts of the medium-speed Marine diesels.
目前我国船用中速柴油机曲轴材料广泛采用球墨铸铁。
Aimed at present Marine maintaining system, managing for usage and repair characters of Marine diesels, this paper analyses their service life accordingly.
文中针对现行船舶的维修体制和船用柴油机的使用管理及修理特点，从经济性出发，分析船用柴油机的寿命。
Marine diesel oil contains some heavy fuel oil, unlike regular diesels.
与常规柴油不同，船用柴油包含一些重质燃料油。
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